B01.12 — Varicella myelitis
B01.12 is a billable, specific ICD-10-CM code for varicella myelitis. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Postchickenpox myelitis
Risk adjustment
B01.12 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 182 Spinal Cord Disorders/Injuries0.478 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
B01.12 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.
- A57204Billing and Coding: MRI and CT Scans of the Head and Neck
How B01.12 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 B01.12.
- Myelitis›postchickenpox
- Myelitis›varicella
- Varicella›with›myelitis
Related codes at this level
Codes that share B01.1. If B01.12 is not quite right, the correct code is usually one of these.
Questions about B01.12
- Is B01.12 a billable ICD-10-CM code?
- Yes. B01.12 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does B01.12 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Viral infections characterized by skin and mucous membrane lesions (B00-B09).