B74.8 — Other filariases
B74.8 is a billable, specific ICD-10-CM code for other filariases. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Dirofilariasis
Other codes that can never be billed with B74.8
These codes carry an Excludes1 note pointing at B74.8. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading B74.8 alone.
Risk adjustment
B74.8 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
B74.8 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.
- A56421Billing and Coding: CT of the Abdomen and Pelvis
How B74.8 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 B74.8.
- Dirofilariasis
- Infection, infected, infective›Dirofilaria
- Infestation›filarial›specified type NEC
Code history
B74.8 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share B74. If B74.8 is not quite right, the correct code is usually one of these.
Questions about B74.8
- Is B74.8 a billable ICD-10-CM code?
- Yes. B74.8 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does B74.8 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Helminthiases (B65-B83).