Get free rules, notes, crosswalks, synonyms, history for ICD-10 code H35. 81 - other international versions of ICD-10 E70. It is found in the 2022 version of the ICD-10 Clinical Modification (CM) and can be used in all HIPAA-covered transactions from Oct 01, 2021 - Sep 30, 2022 . 30 [convert to ICD-9-CM] Unspecified macular degeneration. H35. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. This is the American ICD-10-CM version of H35. 319 Nonexudative age-related macular degeneration, unspecified eyeSearch Results. 32. 2. 311. Neovascular age-related macular degeneration (nAMD) leads to visual impairment if not treated promptly. This code description may also have Includes, Excludes, Notes, Guidelines, Examples and other information. 31. It is found in the 2023 version of the ICD-10 Clinical Modification (CM) and can be used in all HIPAA-covered transactions from Oct 01, 2022 - Sep 30, 2023 . 51 ( Nonexudative senile macular degeneration) before Oct. Nonexudative age-related macular degeneration. Get free rules, notes, crosswalks, synonyms, history for ICD-10 code H35. Get free rules, notes, crosswalks, synonyms, history for ICD-10 code E11. Preventing progression in nonexudative age-related macular degeneration with subthreshold laser therapy: A systematic review. A type 2 excludes note represents "not included here". Disorders of choroid and retina. 3113 H35. 2. The above description is abbreviated. Get free rules, notes, crosswalks, synonyms, history for ICD-10 code H35. 32. 3123 H35. 30: Unspecified macular degeneration [age-related] H35. 3132 is a valid billable ICD-10 diagnosis code for Nonexudative age-related macular degeneration, bilateral, intermediate dry stage . 3132 is a valid billable ICD-10 diagnosis code for Nonexudative age-related macular degeneration, bilateral, intermediate dry stage . Get free rules, notes, crosswalks, synonyms, history for ICD-10 code H35. Geographic atrophy (GA) is an advanced form of age-related macular degeneration (AMD), characterized by progressive and irreversible loss of photoreceptors, retinal pigment epithelium (RPE), and choriocapillaris. A more advanced case of nonexudative age-related macular degeneration (ARMD). ICD-10 code H35. 3210 is a billable diagnosis code used to specify a medical diagnosis of exudative age-related macular degeneration, right eye, stage unspecified. ICD-10-CM Code for Nonexudative age-related macular degeneration, bilateral, intermediate dry stage H35. 3131 [convert to ICD-9-CM] Nonexudative age-related macular degeneration, bilateral, early dry stage. This site is dedicated exclusively to helping you look up ICD-10 codes, quickly access the codes you use most, and become more comfortable with the new code set in general. Access to this feature is available in. Get free rules, notes, crosswalks, synonyms, history for ICD-10 code H35. 311 - Nonexudative age-related macular degeneration, right eye. 3134. 3111 H35. No ads, no spam, and it's free for everybody. Additionally, report the stage and laterality; for example, intermediate nonexudative macular degeneration in the right eye (H35. It is found in the 2023 version of the ICD-10 Clinical Modification (CM) and can be used in all HIPAA-covered transactions from Oct 01, 2022 - Sep 30, 2023 . 3212 may differ. 3592. Access to this feature is available in the following products:Macular Degeneration, a common eye condition affecting the macula in the retina, can be classified using specific ICD-10 codes. • 2—Stable (pre-existing CRVO or BRVO). 371 [convert to ICD-9-CM] Puckering of macula, right eye. 379 may differ. 3191 Nonexudative macular degeneration (dry),. 99. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. Age-related nonexudative macular degeneration of left eye; Age-related nonexudative macular degeneration of right eye; Bilateral age-related nonexudative macular degeneration;. Diabetes mellitus is a common endocrine disorder with serious consequences, and diabetic retinopathy (DR) is the main ophthalmic complication. 312. Central vision becomes washed out and loses detail, and straight lines may appear wavy. Subsequently, a high proportion of such eyes demonstrate regions of loss of retinal pigment epithelium, photoreceptors, and the. Showing 51-75: ICD-10-CM Diagnosis Code H35. ICD-10-CM Diagnosis Code H35. 31 View ICD-10 Tree Chapter 7 - Diseases of the eye and adnexa (H00-H59) » Disorders of choroid and retina (H30-H36) » Nonexudative age-related macular degeneration (H35. This is the American ICD-10-CM version of H35. AMD is more common among White people and is the leading cause of permanent vision loss in older adults. Get free rules, notes, crosswalks, synonyms, history for ICD-10 code H35. 36-. Two-year risk of exudation in eyes with nonexudative age-related macular degeneration and subclinical neovascularization detected with swept source optical coherence tomography angiography. H35 Other retinal disorders. ICD-10 H35. 3190 Nonexudative age-related macular degeneration, unspecified eye, stage unspecified ICD-10-CM Diagnosis Code; H35. H35. The macula forms part of the retina in the back of the eye and is responsible for central vision, color vision, and the fine details of. ICD-10 code lookup — find diagnosis codes (ICD-10-CM) and procedure codes (ICD-10-PCS) by disease, condition or ICD-10 code. 2019 Aug 1;60 (10):3520. 32 may differ. This code description may also have Includes, Excludes, Notes, Guidelines, Examples and other information. 3110. H35. 31 for Nonexudative age-related macular degeneration is a medical classification as listed by WHO under the range - Diseases of the eye and adnexa . This ar-ticle focuses on changes to the diabetic retinopathy and age-related macular degeneration (AMD) codes. Your ophthalmologist will diagnose it as either dry or wet AMD. It is found in the 2023 version of the ICD-10 Clinical Modification (CM) and can be used in all HIPAA-covered transactions from Oct 01, 2022 - Sep 30, 2023 . Clinical relevance: Nonexudative MNV is now known to be more prevalent in patients. ICD 10 code for Nonexudative age-related macular degeneration, left eye, stage unspecified. The retina is a layer of neurosensory tissue in the eye that converts light into neural signals that the brain interprets as images. It is found in the 2022 version of the ICD-10 Clinical Modification (CM) and can be used in all HIPAA-covered transactions from Oct 01, 2021 - Sep 30, 2022 . AADC deficiency. Unspecified macular degeneration: H353110: Nonexudative age-related macular degeneration, right eye, stage unspecified: H353111: Nonexudative age-related macular degeneration, right. H35. Geographic atrophy (GA) is a late-stage manifestation of nonexudative age-related macular degeneration (AMD) that affects nearly 1 million people in the United States (US) and 5 million people worldwide, and leads to significant visual function impairment and eventual blindness. 30 - other international versions of ICD-10 H35. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. 1, 2015. 3134 - other international versions of ICD-10 H35. H35. Access to this feature is available in. 31 - Nonexudative age-related macular degeneration. It is found in the 2024 version of the ICD-10 Clinical Modification (CM) and can be used in all HIPAA-covered transactions from Oct 01, 2023 - Sep 30, 2024 . 37X1 E11. 319 may differ. H35. A real-life population-based cohort study. Search About 52 items found relating to macular degenerationICD-9-CM 362. Angioid streaks of. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. 30. ICD-10-CM Code. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. ↓ See below for any exclusions, inclusions or special. 500 results found. According to thorough estimates, 200 million people worldwide are estimated to have AMD, and by 2040, this number is projected to rise to. 3113 is a valid billable ICD-10 diagnosis code for Nonexudative age-related macular degeneration, right eye, advanced atrophic without subfoveal involvement. Macular degeneration. Geographic atrophy (GA) is a chronic progressive degeneration of the macula, as part of late-stage age-related macular degeneration (AMD). Wet age-related macular degeneration. 1 result found: ICD-10-CM Diagnosis Code H35. ICD 10 code for Nonexudative age-related macular degeneration, right eye, advanced atrophic without subfoveal involvement. 311 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Browse sample topics. 3112 - Nonexudative age-related macular degeneration, right eye, intermediate dry stage. Bilateral macular pucker; Macular pucker, both eyes. ICD 10 code for Nonexudative age-related macular degeneration, right eye, advanced atrophic with subfoveal involvement. 3123 ICD-10 code H35. ICD-10 code H35. Purpose of review: The purpose of this report is to review the recent literature and summarize currently available and potential new treatment options for nonexudative age-related macular degeneration. 24 result found: ICD-10-CM Diagnosis Code H35. 3 - other international versions of ICD-10 H35. 3194 is a billable diagnosis code used to specify a medical diagnosis of nonexudative age-related macular degeneration, unspecified eye, advanced atrophic with subfoveal involvement. 3110 is a billable ICD-10 code used to specify a medical diagnosis of nonexudative age-related macular degeneration, right eye, stage unspecified. 3212. The 2024 edition of ICD-10-CM H35. 3134 is VALID for claim submission. 353 [convert to ICD-9-CM] Cystoid macular degeneration, bilateral. 31 Nonexudative age-related macular degeneration . Get free rules, notes, crosswalks, synonyms, history for ICD-10 code H35. Age Related Macular Degeneration (Non-exudative…ICD 10 code for Nonexudative age-related macular degeneration, left eye, early dry stage. ↓ See below for any exclusions,. 3134. More specific. 311 - other international versions of ICD-10 H35. ↓ See below for any exclusions, inclusions or special. (H35. 3231 is a valid billable ICD-10 diagnosis code for Exudative age-related macular degeneration, bilateral, with active choroidal neovascularization . The classification of age-related macular degeneration (AMD) is based on the phenotype characteristics assessed within 2 disc diameters of the fovea in people aged more than 55 years. Macular degeneration occurs when the small central portion of the retina, known as the macula, deteriorates. A few areas of atrophy are noted, where the retinal pigment epithelium (RPE). Nonexudative senile macular degeneration. (n = 1940,657) diagnosed with AMD based on ICD-10 codes (H35. 3110 is a billable ICD-10 code used to specify a medical diagnosis of nonexudative age-related macular degeneration, right eye, stage unspecified. ICD 10 code for Nonexudative age-related macular degeneration,. 3111 is a valid billable ICD-10 diagnosis code for Nonexudative age-related macular degeneration, right eye, early dry stage. There are two basic types of macular degeneration: “dry” and “wet. Am J. Choroidal degeneration. This site is dedicated exclusively to helping you look up ICD-10 codes, quickly access the codes you use most, and become more comfortable with the new code set in general. A more advanced case of nonexudative age-related macular degeneration (ARMD). The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. Correct staging enables more. H35. 81 may differ. H35. ICD-10-CM Diagnosis Codes. Get free rules, notes, crosswalks, synonyms, history for ICD-10 code H35. 311. 349 Central serous chorioretinopathy H35. Currently available treatments for exudative AMD use intravitreal injections, which are associated with high risk of infection that can lead to. 32 Exudative age-related macular degeneration; Disease History. 1 result found: ICD-10-CM Diagnosis Code H35. When using code H35. 3134 is grouped in the following Diagnostic Related Group(s) (MS-DRG v39. Age related macular degeneration, nonexudative; Age-related nonexudative macular degeneration of left eye; Age-related nonexudative macular degeneration of right eye; Bilateral age-related nonexudative. 373 [convert to ICD-9-CM] Puckering of macula, bilateral. This code description may also have Includes, Excludes, Notes, Guidelines, Examples and other information. This is the American ICD-10-CM version of H35. Nonexudative age-related macular degeneration, bilateral, advanced atrophic with subfoveal involvement Billable. Methods: Retrospective study of eyes with nonexudative AMD. ) TYPE RT LT BOTH SINGLE CODE UNSPECIFIED Macular cyst, hole, or pseudohole H35. 50 [macular degeneration (senile), unspecified] and 362. 3110 - H35. 3121 - Nonexudative age-related macular degeneration, left eye, early dry stage. The above description is abbreviated. 3132 for Nonexudative age-related macular degeneration, bilateral, intermediate dry stage is a medical classification as listed by WHO under the range -. ↓ See below for any. 6%) of the population aged 40 years and older in 2019. Loss of vision may still occur. 51 should only be used for claims with a date of service on or before September 30, 2015. In early AMD, only medium drusen (diameter between 63 µm and 125 µm) are present, while in intermediate AMD the typical findings are large drusen. It is the leading cause of blindness in. ICD-10-CM Code for Nonexudative age-related macular degeneration, bilateral, intermediate dry stage H35. H35. 3192. 3231 in. ICD-10 codes covered if selection criteria are met: H35. Get free rules, notes, crosswalks, synonyms, history for ICD-10 code H35. 52), as identified by the. Nonexudative macular degeneration (dry), advanced atrophic without subfoveal involvement H35. E70. 3211,Degeneration of Macula and Posterior Pole Type RT LT OU SINGLE CODE UNSPECIFIED Nonexudative macular degeneration (dry) X X X H35. Nonexudative age-related macular degeneration, right eye Non-Billable Code. ICD-10-CM Code for Nonexudative age-related macular degeneration, left eye, advanced atrophic without subfoveal involvement H35. Drusen are small clumps of protein. 3132 is a valid billable ICD-10 diagnosis code for Nonexudative age-related macular degeneration, bilateral, intermediate dry stage . 3132. This code description may also have Includes, Excludes, Notes, Guidelines, Examples and other information. 439 Nonexudative macular degeneration (dry), early dry stage H35. Intravitreal anti-VEGF drugs have revolutionized nAMD treatment in the past two decades. Dry: If the patient suffers from nonexudative — otherwise known as dry,. 2024 (effective 10/1/2023): No change. Age related macular degeneration; Age related macular degeneration (eye condition); Bilat macular degeneration; Bilateral macular degeneration; Left macular degeneration; Right. Get free rules, notes, crosswalks, synonyms, history for ICD-10 code H35. 3193 - Nonexudative age-related macular degeneration, unspecified eye, advanced atrophic without subfoveal involvement; H35. ICD 10 code for Nonexudative age-related macular degeneration, left eye, advanced atrophic with subfoveal involvement. H35. Nonexudative age-related macular degeneration, left eye Non-Billable Code. were affected by AMD. H35. 3111 H35. After that date, the ICD-10 codes take effect, and you would report H35. 30 may differ. The above description is abbreviated. 3111 - Nonexudative age-related macular degeneration, right eye, early dry stage. 3110 - Nonexudative age-related macular degeneration, right eye, stage unspecified. 24 result found: ICD-10-CM Diagnosis Code H35. 30 is a valid billable ICD-10 diagnosis code for Unspecified macular degeneration . The proposed ICD-10 2017 code changes that take effect on October 1, 2016, have already been released; in all of eye care, few subspecialties are as impacted as retina. 31 ( Nonexudative senile macular. The above description is abbreviated. H35. 3122 - Nonexudative age-related macular degeneration, left eye, intermediate dry stage. Access to this feature is available in the following products:ICD 10 code for Exudative age-related macular degeneration, right eye, with active choroidal neovascularization. 3131 for Nonexudative age-related macular degeneration, bilateral, early dry stage is a medical classification as listed by WHO under the range - Diseases of the eye and adnexa . 071 became effective on October 1, 2023. Description and Classification of Age-Related Macular Degeneration Age-related macular degeneration is an acquired retinal disorder which is characterized by any of the following fundus changes: pigmentary atrophy and degeneration, drusen and lipofuscin deposits, and exudative elevation of the outer retinal complex in the macular area. 500 results found. 3123 for Nonexudative age-related macular degeneration, left eye, advanced atrophic without subfoveal involvement is a medical classification as listed by WHO under the range -. H35. H35. 3124 is a billable diagnosis code used to specify a medical diagnosis of nonexudative age-related macular degeneration, left eye, advanced atrophic with subfoveal involvement. 433 X H35. ICD-10-CM Diagnosis Code H35. ICD 10 code for Nonexudative age-related macular degeneration, right eye, stage unspecified. H35. Showing 1-25: ICD-10-CM Diagnosis Code H35. 3114 is a billable diagnosis code used to specify a medical diagnosis of nonexudative age-related macular degeneration, right eye, advanced atrophic with subfoveal involvement. 3112 is a valid billable ICD-10 diagnosis code for Nonexudative age-related macular degeneration, right eye, intermediate dry stage . H35. 3123. 313 is based on the following Tabular structure:. Nonexudative wet AMD: This is a newly defined state of AMD in which new blood vessels are visible on ocular coherence tomography angiography (OCTA) but no edema or fluid leakage from. 31 is a "category code," which means it's non-billable. Inhalation of dry ice, initial encounter. 311 - other international versions of ICD-10 H35. 3292 may differ. 3 Degeneration of macula and posterior pole H35. ICD-10-CM/PCS MS-DRG v34. 3121 is a billable diagnosis code used to specify a medical diagnosis of nonexudative age-related macular degeneration, left eye, early dry stage. Macular degeneration, also called age-related macular degeneration, or AMD, is an eye disease that affects people’s central vision. Access to this feature is available in the following products: ICD-10 code H35. Access to this. ICD 10 code for Nonexudative age-related macular degeneration, unspecified eye, early dry stage. H35. Get free rules, notes, crosswalks, synonyms, history for ICD-10 code H35. Subscribe to Codify by AAPC and get the code details in a flash. H35. H35. ICD 10 code for Nonexudative age-related macular degeneration, unspecified eye, advanced atrophic without subfoveal involvement. 3122 ICD-10 code H35. Purpose: To investigate the relationship between subfoveal choroidal thickness and disease manifestation in a series of eyes with nonexudative age-related macular degeneration (AMD). 51 Nonexudative AMD – H35. ICD-10-CM Code for Nonexudative age-related macular degeneration, left eye, intermediate dry stage H35. 3133 for Nonexudative age-related macular degeneration, bilateral, advanced atrophic without subfoveal involvement is a medical classification as listed by. 3192 Nonexudative age-related macular degeneration, unspecified eye, intermediate dry. The ICD-10 codes for age-related macular degeneration (AMD) involve both laterality and. 379 - other international versions of ICD-10 H35. 81 became effective on October 1, 2023. ICD 10 code for Nonexudative age-related macular degeneration, unspecified eye. 059: Retinal neovascularization, unspecified [associated with age-related macular degeneration] H35. H35. The nomenclature of age-related macular degeneration (AMD) has undergone several changes in the recent past. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. H35. 312 is a non-billable ICD-10 code for Nonexudative age-related macular degeneration, left eye. 321. Nonexudative age-related macular degeneration. This is the American ICD-10-CM version of H35. Access the full ICD-10 Coding Guide for $9. or: 2024 ICD-10-CM H35. 3120 is a billable diagnosis code used to specify a medical diagnosis of nonexudative age-related macular degeneration, left eye, stage unspecified. 3113. Because this is a new code, geographic atrophy is included in VEHSS as a subgroup of dry-form AMD. ICD-10-CM Code for Nonexudative age-related macular degeneration H35. Exudative age-related macular degeneration : ICD-10 codes not covered for indications listed in the CPB: H35. 3133 for Nonexudative age-related macular degeneration, bilateral, advanced atrophic without subfoveal involvement is a medical classification as listed by WHO under the range -. ICD-10-CM Diagnosis Codes. ICD 10 code for Nonexudative age-related macular degeneration, bilateral, early dry stage. 713 X H35. 1 result found: ICD-10-CM Diagnosis Code H35. Your ophthalmologist will diagnose it as either dry or wet AMD. ”. ICD-10-CM Description E50. ICD 10 code for Nonexudative age-related macular degeneration, unspecified eye, intermediate dry stage. Category or Header define the heading. 3132 - Nonexudative age-related macular degeneration, bilateral, intermediate dry stage. 3192 is a billable diagnosis code used to specify a medical diagnosis of nonexudative age-related macular degeneration, unspecified eye, intermediate dry stage. Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes. H35. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. This site is dedicated exclusively to helping you look up ICD-10 codes, quickly access the codes you use most, and become more comfortable with the new code set in general. Nonexudative age-related macular degeneration H35. 379 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. This is the American ICD-10-CM version of H35. 1. 3111 Nonexudative age-related macular degeneration, right eye, early dry stage H35. 3123 H35. Bilateral secondary pigmentary retinal degeneration; Secondary pigmentary retinal degeneration, both eyes. Nonexudative (dry) age-related macular degeneration (AMD or ARMD) accounts for more than 90% of patients diagnosed with AMD. 31 - Nonexudative age-related macular degeneration H35. ICD-10 code H35. ICD-10-CM/PCS MS-DRG v38. 3111 is a billable diagnosis code used to specify a medical diagnosis of nonexudative age-related macular degeneration, right eye, early dry stage. Subsequently wet was replaced with neovascular which clearly linked the. ICD 10 code for Nonexudative age-related macular degeneration, right eye. Bilateral dry eye syndrome; Dry eye syndrome, both eyes. Enctr for exam. This is the American ICD-10-CM version of H35. H35. 312, Nonexudative age-related macular degeneration, left eye, H35. 311. Search Results. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. 3230 - other international versions of ICD-10 H35. 31 Nonexudative age-related macular degeneration. 3132 ICD-10 code H35. This is the American ICD-10-CM version of H35. Abstract; Full Text; Full Text PDF; PubMed;. Subscribe to Codify by AAPC and get the code details in a flash. ICD-10-CM Codes. Poisoning by keratolytics, keratoplastics, and other hair treatment drugs and preparations, accidental (unintentional), initial encounter. The 2024 edition of ICD-10-CM E70. 2 Diabetes mellitus Type 2 Type RT LT OU SINGLE CODE UNSPECIFIED With diabetic macular edema, resolved following treatment E11. Billable - H35. This code description may also have Includes, Excludes, Notes, Guidelines, Examples and other information. In 10 – 15% of patients with dry AMD, the disease converts to the wet form, which is also an advanced form of AMD. 31 has been expanded into a section: H35. 6 result found: ICD-10-CM Diagnosis Code H35. 312 - other international versions of ICD-10 H35. Diagnosis. We evaluated the visual outcomes of anti-VEGF treatment in nAMD. H35. To further refine the specific benefits of antioxidants, a randomized controlled clinical trial, Age-Related Eye Disease Study 2 (AREDS2), was performed. . (ICD-9) diagnosis codes of RA and control subjects (no RA) and were matched at baseline by propensity score. ↓ See below for any exclusions, inclusions or special. 3133. 31- Nonexudative age-related macular degeneration. Practices can expect claim denials if unspecified codes continue to be used. 8 million (12. 10. 52, exudative senile macular degeneration) and dry (ICD-9 code 362. 3122 H35. Nonexudative age-related macular degeneration, right eye500 results found. ICD-10 code H35. 3112 is a valid billable ICD-10 diagnosis code for Nonexudative age-related macular degeneration, right eye, intermediate dry stage . Changes in the eye that characterize macular degeneration can often. No ads, no spam, and it's free for everybody. Age-related macular degeneration (AMD) is a disorder of the macula characterized in its early and intermediate stages by the presence of drusen and pigmentary abnormalities in the macular region of the retina. 3112) is coded to the highest level of specificity. Search Results. Diabetic Retinopathy When ICD-10 launched in 2015, oneICD-10-CM/PCS MS-DRG v41. E13. One of the following 7th characters is to be assigned to each code in subcategory H35. ICD-9-CM 362. The. Access to this feature is available in the following products:ICD-10 code H35. ICD 10 code for Nonexudative age-related macular degeneration, unspecified eye, intermediate dry stage. 313 : H00-H59. 3190 is a billable diagnosis code used to specify a medical diagnosis of nonexudative age-related macular degeneration, unspecified eye, stage unspecified. This code description may also have Includes, Excludes, Notes, Guidelines, Examples and other information. 312. E11. The above description is abbreviated. Access to this feature is available in the following products:The length of ICD-10-CM diagnosis codes can range from four to seven characters; however, instructions indicate that when a 7th character is to be used it must be positioned as the 7th character. 7% and in 2020, it was estimated that over 190 million worldwide and over 11 million individuals in the U. Soft drusen are defined as drusen that have indistinct borders.