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ICD-10-CM 2027 diagnosis code

M83Adult osteomalacia

Not billable — use a more specific code

M83 is a header code, so it can't be reported by itself. Choose one of the 8 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About M83

M83 is the ICD-10-CM diagnosis code for adult osteomalacia. It belongs to block M80-M85 (disorders of bone density and structure) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: M83.0 (osteomalacia), M83.1 (osteomalacia), M83.2 (due to malabsorption), M83.3 (due to malnutrition), M83.4 (disease), M83.5 (adults), M83.8 (osteomalacia) and M83.9 (unspecified).

Don't report M83 together with the conditions in its Excludes1 note: infantile and juvenile osteomalacia (E55.0), renal osteodystrophy (N25.0), rickets (active) (E55.0), rickets (active) sequelae (E64.3) and 2 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under M83

Coding notes

Excludes1Not coded here — never report together with this code
  • infantile and juvenile osteomalacia (E55.0)
  • renal osteodystrophy (N25.0)
  • rickets (active) (E55.0)
  • rickets (active) sequelae (E64.3)
  • vitamin D-resistant osteomalacia (E83.31)
  • vitamin D-resistant rickets (active) (E83.31)

Notes that apply from higher levels

Instructions written at a parent level also apply to M83.

Broader instructions also apply from Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Codes whose notes reference M83

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about M83

Is M83 billable?

No. M83 is a header code. Report one of its more specific subcodes instead.