E71.521 — Adolescent X-linked adrenoleukodystrophy
E71.521 is a billable, specific ICD-10-CM code for adolescent x-linked adrenoleukodystrophy. It is valid for submission on a claim.
Risk adjustment
E71.521 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
E71.521 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56773Billing and Coding: Neurophysiology Evoked Potentials (NEPs)
How E71.521 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to E71.521.
- Adolescent X-linked adrenoleukodystrophy
- Adrenoleukodystrophy›X-linked›adolescent
- Disorder›peroxisomal›X-linked adrenoleukodystrophy›adolescent
Related codes at this level
Codes that share E71.52. If E71.521 is not quite right, the correct code is usually one of these.
Questions about E71.521
- Is E71.521 a billable ICD-10-CM code?
- Yes. E71.521 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does E71.521 sit in the tabular list?
- Endocrine, nutritional and metabolic diseases (E00-E89), in the block Metabolic disorders (E70-E88).