M11.0
Hydroxyapatite deposition disease
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
Official Guidelines
No guideline section names this code or its chapter.
Index entries leading here 1
Alongside this code 4 same parent — M11
Subordinate codes 10
M11.00 Hydroxyapatite deposition disease, unspecified site M11.01 Hydroxyapatite deposition disease, shoulder M11.02 Hydroxyapatite deposition disease, elbow M11.03 Hydroxyapatite deposition disease, wrist M11.04 Hydroxyapatite deposition disease, hand M11.05 Hydroxyapatite deposition disease, hip M11.06 Hydroxyapatite deposition disease, knee M11.07 Hydroxyapatite deposition disease, ankle and foot M11.08 Hydroxyapatite deposition disease, vertebrae M11.09 Hydroxyapatite deposition disease, multiple sites
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.