A31.9
Billable
ChapterA00–B99
Ranksubcategory
Official Description
Mycobacterial infection, unspecified
Metadata & Insights
- •2026 ICD-10-CM Edition - Effective October 1, 2025.
- •Billable/specific code (valid for reimbursement).
- •Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).
Instructional Notes
Includes
- Atypical mycobacterial infection NOS
- Mycobacteriosis NOS
General instructions are available for the parent sections:
Clinical Hierarchy
Applicable Ancestor Context
The following parent sections contain instructions or notes that apply to A31.9:
Alphabetic Index Mentions
These are Diagnosis Index lookup paths that route to A31.9. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.
4 raw paths
MS-DRG Classification
This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:
Cross Reference
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