B49 — Unspecified mycosis
B49 is a billable, specific ICD-10-CM code for unspecified mycosis. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Fungemia NOS
Risk adjustment
B49 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
B49 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 B49 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 B49.
- Bronchomycosis NOS
- Fungemia NOS
- Keratomycosis
- Mycelium infection
- Mycosis, mycotic
- Pneumomycosis
- Arthritis, arthritic›mycotic NEC
- Cough›tea taster's
- Diarrhea, diarrheal›mycotic NEC
- Disease, diseased›fungus NEC
- Disease, diseased›mycotic
- Fungus, fungous›disease NOS
Questions about B49
- Is B49 a billable ICD-10-CM code?
- Yes. B49 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does B49 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Mycoses (B35-B49).