M11.8 – Other specified crystal arthropathies
ICD-10-CM 2027 diagnosis code · Inflammatory polyarthropathies
ICD-10-CM code
M11.8
- Code
M11.8(claims format:M118)- Description
- Other specified crystal arthropathies
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
- Block
- M05-M14 Inflammatory polyarthropathies
- Parent codes
- M11
Billable codes under M11.8
M11.8 is a header code and cannot be used on claims. Choose the most specific code:
- M11.80 – Other specified crystal arthropathies, unspecified siteBillable
- M11.81 – Other specified crystal arthropathies, shoulderHeader (more codes below)
- M11.82 – Other specified crystal arthropathies, elbowHeader (more codes below)
- M11.83 – Other specified crystal arthropathies, wristHeader (more codes below)
- M11.84 – Other specified crystal arthropathies, handHeader (more codes below)
- M11.85 – Other specified crystal arthropathies, hipHeader (more codes below)
- M11.86 – Other specified crystal arthropathies, kneeHeader (more codes below)
- M11.87 – Other specified crystal arthropathies, ankle and footHeader (more codes below)
- M11.88 – Other specified crystal arthropathies, vertebraeBillable
- M11.89 – Other specified crystal arthropathies, multiple sitesBillable
Related codes in M11
Frequently asked questions
What is ICD-10 code M11.8?
M11.8 is the ICD-10-CM code for other specified crystal arthropathies, in the block M05-M14 (Inflammatory polyarthropathies).
Is M11.8 a billable code?
No. M11.8 is a header code with more specific child codes; report one of the billable codes listed above.
What category does M11.8 belong to?
It belongs to category M11 – Other crystal arthropathies.
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.