B46.4 — Disseminated mucormycosis
B46.4 is a billable, specific ICD-10-CM code for disseminated mucormycosis. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Generalized mucormycosis
Risk adjustment
B46.4 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 6 Opportunistic Infections0.381 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
B46.4 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.
- A57672Billing and Coding: Nail Debridement
How B46.4 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 B46.4.
- Mucormycosis›disseminated
- Mucormycosis›generalized
Related codes at this level
Codes that share B46. If B46.4 is not quite right, the correct code is usually one of these.
Questions about B46.4
- Is B46.4 a billable ICD-10-CM code?
- Yes. B46.4 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does B46.4 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Mycoses (B35-B49).