B58.3 — Pulmonary toxoplasmosis
B58.3 is a billable, specific ICD-10-CM code for pulmonary toxoplasmosis. It is valid for submission on a claim.
Other codes that can never be billed with B58.3
These codes carry an Excludes1 note pointing at B58.3. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading B58.3 alone.
- J17Pneumonia in diseases classified elsewhere
Risk adjustment
B58.3 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
B58.3 is named in 3 Medicare coverage policies — 3 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56717Billing and Coding: Respiratory Therapy (Respiratory Care)
- A57205Billing and Coding: Oximetry Services
- A57224Billing and Coding: Respiratory Care
How B58.3 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 B58.3.
- Pneumonia›in›toxoplasmosis
- Pneumonitis›due to›toxoplasmosis(acquired)
- Toxoplasma, toxoplasmosis›with›pneumonia, pneumonitis
Related codes at this level
Codes that share B58. If B58.3 is not quite right, the correct code is usually one of these.
Questions about B58.3
- Is B58.3 a billable ICD-10-CM code?
- Yes. B58.3 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does B58.3 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Protozoal diseases (B50-B64).