A31.0 Pulmonary mycobacterial infection
The ICD-10-CM code for Pulmonary mycobacterial infection is A31.0 (FY2026). It is a billable, claim-ready diagnosis code.
Classification
- Section
- A30-A49: Other bacterial diseases (A30-A49)
- Category A31
- 6 codes (5 billable)
- FY2026 Status
- Stable since FY2024
Also Known As
ICD-10-CM Alphabetic Index entries that lead to A31.0:
- Battey Mycobacterium infection
- Mycobacterium, mycobacterial (infection) › intracellulare (Battey bacillus)
- Disease, diseased › Battey
- Mycobacterium, mycobacterial (infection) › kansasii (yellow bacillus)
- Mycobacterium, mycobacterial (infection) › pulmonary (atypical)
- Mycobacterium, mycobacterial (infection) › Battey
- Mycobacterium, mycobacterial (infection) › avium (intracellulare complex)
- Disease, diseased › photochromogenic (acid-fast bacilli) (pulmonary)
Inclusion Terms
- Infection due to Mycobacterium avium
- Infection due to Mycobacterium intracellulare [Battey bacillus]
- Infection due to Mycobacterium kansasii
U.S. Hospital Utilization
- An estimated 11,470 U.S. inpatient stays in 2023 included A31.0 among the documented diagnoses.
- 1,930 stays listed it as the principal diagnosis.
Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.
Official Coding Guidelines
HIV Infections (TOC entry)a. Human Immunodeficiency Virus (HIV) Infections .............................................................. 19
Infectious agents causing diseases in other chapters (TOC)b. Infectious agents as the cause of diseases classified to other chapters ................................. 22
Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026