M11.8
Other specified crystal arthropathies
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 10 never code together
M00-M99chapter
Excludes2
- arthropathic psoriasis (L40.5-)L40.5-
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- compartment syndrome (traumatic) (T79.A-)T79.A-
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 2
Index entries leading here filed at null
No alphabetic index entry points at this code.
Alongside this code 4 same parent — M11
Subordinate codes 10
M11.80 Other specified crystal arthropathies, unspecified site M11.81 Other specified crystal arthropathies, shoulder M11.82 Other specified crystal arthropathies, elbow M11.83 Other specified crystal arthropathies, wrist M11.84 Other specified crystal arthropathies, hand M11.85 Other specified crystal arthropathies, hip M11.86 Other specified crystal arthropathies, knee M11.87 Other specified crystal arthropathies, ankle and foot M11.88 Other specified crystal arthropathies, vertebrae M11.89 Other specified crystal arthropathies, multiple sites
Medications 1
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.