MCMCB Pro
B89

B89Unspecified parasitic disease

Billable / specific codeICD-10-CM

B89 is a billable, specific ICD-10-CM code for unspecified parasitic disease. It is valid for submission on a claim.

Risk adjustment

B89 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.

How B89 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 B89.

  • Parasitism
  • Cystparasitic
  • Disease, diseasedparasitic
  • Infection, infected, infectiveparasitic
  • Infestationorbit, parasitic NOS
  • Infestationparasite, parasitic
  • Meningoencephalitisparasitic NEC
  • Parasiticdisease NEC
  • Arthritis, arthriticdue to or associated withparasitic disease NEC
  • Arthritis, arthriticinparasitic disease NEC
  • Encephalitisinparasitic disease NEC
  • Hydrocephalusininfectious disease NEC

Questions about B89

Is B89 a billable ICD-10-CM code?
Yes. B89 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does B89 sit in the tabular list?
Certain infectious and parasitic diseases (A00-B99), in the block Pediculosis, acariasis and other infestations (B85-B89).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.