A31.1 – Cutaneous mycobacterial infection
ICD-10-CM 2027 diagnosis code · Other bacterial diseases
ICD-10-CM code
A31.1
- Code
A31.1(claims format:A311)- Description
- Cutaneous mycobacterial infection
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- A30-A49 Other bacterial diseases
- Parent codes
- A31
Notes for A31.1
Applicable to:
- Buruli ulcer
- Infection due to Mycobacterium marinum
- Infection due to Mycobacterium ulcerans
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
A31 – Infection due to other mycobacteria
Index terms for A31.1
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Buruli ulcer
- Granuloma, swimming pool
- Mycobacterium, mycobacterial, balnei
- Mycobacterium, mycobacterial, marinum
- Mycobacterium, mycobacterial, ulcerans
- Mycobacterium, mycobacterial, cutaneous
- Mycobacterium, mycobacterial, luciflavum
- Disease, diseased, swimming-pool granuloma
- Mycobacterium, mycobacterial, atypical, cutaneous
- Infection, infected, infective, swimming pool bacillus
- Infection, infected, infective, Bacillus, swimming pool
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative, Buruli
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative, mycobacterial
- Ulcer, ulcerated, ulcerating, ulceration, ulcerative, skin, mycobacterial
Related codes in A31
Frequently asked questions
What is ICD-10 code A31.1?
A31.1 is the ICD-10-CM code for cutaneous mycobacterial infection, in the block A30-A49 (Other bacterial diseases).
Is A31.1 a billable code?
Yes. A31.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does A31.1 belong to?
It belongs to category A31 – Infection due to other mycobacteria.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.