B09
B09 — Unspecified viral infection characterized by skin and mucous membrane lesions
Billable / specific codeICD-10-CM
B09 is a billable, specific ICD-10-CM code for unspecified viral infection characterized by skin and mucous membrane lesions. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Viral enanthema NOS
- Viral exanthema NOS
Risk adjustment
B09 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 B09 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 B09.
- Enanthema, viral
- Roseola
- Encephalitis›postexanthematous NEC
- Exanthem, exanthema›viral, virus
- Keratoconjunctivitis›in exanthema
- Infection, infected, infective›virus, viral NOS›exanthem NOS
- Keratitis›in›exanthema
Questions about B09
- Is B09 a billable ICD-10-CM code?
- Yes. B09 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does B09 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).