A31.0 — Pulmonary mycobacterial infection
A31.0 is a billable, specific ICD-10-CM code for pulmonary mycobacterial infection. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Infection due to Mycobacterium avium
- Infection due to Mycobacterium intracellulare [Battey bacillus]
- Infection due to Mycobacterium kansasii
Risk adjustment
A31.0 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
A31.0 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.
- A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
- A56717Billing and Coding: Respiratory Therapy (Respiratory Care)
- A57224Billing and Coding: Respiratory Care
How A31.0 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 A31.0.
- Battey Mycobacterium infection
- Disease, diseased›Battey
- Disease, diseased›photochromogenic(acid-fast bacilli) (pulmonary)
- Mycobacterium, mycobacterial›avium(intracellulare complex)
- Mycobacterium, mycobacterial›Battey
- Mycobacterium, mycobacterial›intracellulare(Battey bacillus)
- Mycobacterium, mycobacterial›kansasii(yellow bacillus)
- Mycobacterium, mycobacterial›pulmonary(atypical)
- Infection, infected, infective›lung›atypical Mycobacterium
- Mycobacterium, mycobacterial›atypical›pulmonary
Related codes at this level
Codes that share A31. If A31.0 is not quite right, the correct code is usually one of these.
Questions about A31.0
- Is A31.0 a billable ICD-10-CM code?
- Yes. A31.0 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does A31.0 sit in the tabular list?
- Certain infectious and parasitic diseases (A00-B99), in the block Other bacterial diseases (A30-A49).