ICD-10-CM 2027
ICD-10 code for osteomalacia
From the official ICD-10-CM alphabetic index entry “Osteomalacia”. Page updated September 29, 2026.
About coding osteomalacia
The ICD-10-CM code for osteomalacia is M83.9 (Adult osteomalacia, unspecified). The official index lists 32 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M83.9.
Within M83, choose M83.9 (unspecified) only when documentation doesn't support a more specific option: puerperal osteomalacia (M83.0), senile osteomalacia (M83.1), due to malabsorption (M83.2), due to malnutrition (M83.3), Aluminum bone disease (M83.4), other drug-induced osteomalacia in adults (M83.5) and other adult osteomalacia (M83.8).
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 osteomalacia codes (official index)
- adult M83.9 — Adult osteomalacia, unspecified
- drug-induced NEC M83.5 — Other drug-induced osteomalacia in adults
- due to
- malabsorption (postsurgical) M83.2 — Adult osteomalacia due to malabsorption
- malnutrition M83.3 — Adult osteomalacia due to malnutrition
- specified NEC M83.8 — Other adult osteomalacia
- aluminium-induced M83.4 — Aluminum bone disease
- infantile
- juvenile
- oncogenic E83.89 — Other disorders of mineral metabolism
- pelvis M83.8 — Other adult osteomalacia
- puerperal M83.0 — Puerperal osteomalacia
- senile M83.1 — Senile osteomalacia
- vitamin-D-resistant in adults E83.31 — Familial hypophosphatemia
- carpus E83.31 — Familial hypophosphatemia
- clavicle E83.31 — Familial hypophosphatemia
- femur E83.31 — Familial hypophosphatemia
- fibula E83.31 — Familial hypophosphatemia
- finger E83.31 — Familial hypophosphatemia
- humerus E83.31 — Familial hypophosphatemia
- ilium E83.31 — Familial hypophosphatemia
- ischium E83.31 — Familial hypophosphatemia
- metacarpus E83.31 — Familial hypophosphatemia
- metatarsus E83.31 — Familial hypophosphatemia
- multiple sites E83.31 — Familial hypophosphatemia
- neck E83.31 — Familial hypophosphatemia
- pubic ramus
- radius E83.31 — Familial hypophosphatemia
- rib E83.31 — Familial hypophosphatemia
- scapula E83.31 — Familial hypophosphatemia
- skull E83.31 — Familial hypophosphatemia
- tarsus E83.31 — Familial hypophosphatemia
- tibia E83.31 — Familial hypophosphatemia
- toe E83.31 — Familial hypophosphatemia
- ulna E83.31 — Familial hypophosphatemia
- vertebra E83.31 — Familial hypophosphatemia
Common questions about osteomalacia ICD-10 codes
What is the ICD-10 code for osteomalacia?
- M83.9 — Adult osteomalacia, unspecified. More specific codes apply when the documentation supports them: M83.9, M83.5, M83.2, M83.3 and others below.
What is the ICD-10 code for adult osteomalacia?
- M83.9 — Adult osteomalacia, unspecified.
What is the ICD-10 code for aluminium-induced osteomalacia?
- M83.4 — Aluminum bone disease.
What is the ICD-10 code for oncogenic osteomalacia?
- E83.89 — Other disorders of mineral metabolism.
What is the ICD-10 code for pelvis osteomalacia?
- M83.8 — Other adult osteomalacia.
What is the ICD-10 code for puerperal osteomalacia?
- M83.0 — Puerperal osteomalacia.
What is the ICD-10 code for senile osteomalacia?
- M83.1 — Senile osteomalacia.
Is M83.9 billable?
- Yes. M83.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M83.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M83.9 as a principal diagnosis.
Is M83.9 a CC or MCC?
- No. M83.9 is neither a CC nor an MCC under MS-DRG v44.0.