ICD-10-CM 2027
ICD-10 code for Hydroxyapatite deposition disease
From the official ICD-10-CM alphabetic index entry “Disease, diseased › hydroxyapatite deposition”. Page updated September 29, 2026.
About coding Hydroxyapatite deposition disease
The ICD-10-CM code for Hydroxyapatite deposition disease is M11.00 (Hydroxyapatite deposition disease, unspecified site). The official index lists 10 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M11.00.
Within M11.0, choose M11.00 (unspecified site) only when documentation doesn't support a more specific option: shoulder (M11.01), elbow (M11.02), wrist (M11.03), hand (M11.04), hip (M11.05), knee (M11.06), ankle and foot (M11.07), vertebrae (M11.08) and 1 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 553 (Bone Diseases and Arthropathies with MCC, relative weight 1.2494) and DRG 554 (Bone Diseases and Arthropathies without MCC, relative weight 0.8331), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific Hydroxyapatite deposition disease codes (official index)
- ankle M11.07 — Hydroxyapatite deposition disease, ankle and foot
- elbow M11.02 — Hydroxyapatite deposition disease, elbow
- foot joint M11.07 — Hydroxyapatite deposition disease, ankle and foot
- hand joint M11.04 — Hydroxyapatite deposition disease, hand
- hip M11.05 — Hydroxyapatite deposition disease, hip
- knee M11.06 — Hydroxyapatite deposition disease, knee
- multiple site M11.09 — Hydroxyapatite deposition disease, multiple sites
- shoulder M11.01 — Hydroxyapatite deposition disease, shoulder
- vertebra M11.08 — Hydroxyapatite deposition disease, vertebrae
- wrist M11.03 — Hydroxyapatite deposition disease, wrist
Common questions about Hydroxyapatite deposition disease ICD-10 codes
What is the ICD-10 code for Hydroxyapatite deposition disease?
- M11.00 — Hydroxyapatite deposition disease, unspecified site. More specific codes apply when the documentation supports them: M11.07, M11.02, M11.07, M11.04 and others below.
What is the ICD-10 code for ankle hydroxyapatite deposition disease?
- M11.07 — Hydroxyapatite deposition disease, ankle and foot (header code; choose a more specific subcode).
What is the ICD-10 code for elbow hydroxyapatite deposition disease?
- M11.02 — Hydroxyapatite deposition disease, elbow (header code; choose a more specific subcode).
What is the ICD-10 code for foot joint hydroxyapatite deposition disease?
- M11.07 — Hydroxyapatite deposition disease, ankle and foot (header code; choose a more specific subcode).
What is the ICD-10 code for hand joint hydroxyapatite deposition disease?
- M11.04 — Hydroxyapatite deposition disease, hand (header code; choose a more specific subcode).
What is the ICD-10 code for hip hydroxyapatite deposition disease?
- M11.05 — Hydroxyapatite deposition disease, hip (header code; choose a more specific subcode).
What is the ICD-10 code for knee hydroxyapatite deposition disease?
- M11.06 — Hydroxyapatite deposition disease, knee (header code; choose a more specific subcode).
Is M11.00 billable?
- Yes. M11.00 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M11.00 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M11.00 as a principal diagnosis.
Is M11.00 a CC or MCC?
- No. M11.00 is neither a CC nor an MCC under MS-DRG v44.0.