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ICD-10-CM 2027 diagnosis code

M89.7Major osseous defect

Not billable — use a more specific code

M89.7 is a header code, so it can't be reported by itself. Choose one of the 10 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 M89.7

M89.7 is the ICD-10-CM diagnosis code for major osseous defect. It belongs to category M89 (other disorders of bone), block M86-M90 (other osteopathies) 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 10 subcodes must be used instead.

Within M89 (other disorders of bone), M89.7 is specifically for major osseous defect. Related codes cover Algoneurodystrophy (M89.0), physeal arrest (M89.1), development and growth (M89.2), hypertrophy of bone (M89.3), other hypertrophic osteoarthropathy (M89.4), osteolysis (M89.5), osteopathy after poliomyelitis (M89.6), other specified disorders of bone (M89.8) and 1 more.

To report this condition, pick the subcode that matches the documentation: M89.70 (unspecified site), M89.71 (shoulder region), M89.72 (humerus), M89.73 (forearm), M89.74 (hand), M89.75 (pelvic region and thigh), M89.76 (lower leg), M89.77 (ankle and foot) and 2 more.

Code first underlying disease, if known, such as: aseptic necrosis of bone (M87.-), malignant neoplasm of bone (C40.-), osteolysis (M89.5-), osteomyelitis (M86.-) and 3 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 M89.7

Coding notes

Code firstSequence the underlying condition first
  • underlying disease, if known, such as:
  • aseptic necrosis of bone (M87.-)
  • malignant neoplasm of bone (C40.-)
  • osteolysis (M89.5-)
  • osteomyelitis (M86.-)
  • osteonecrosis (M87.-)
  • osteoporosis (M80.-, M81.-)
  • periprosthetic osteolysis (T84.05-)

Notes that apply from higher levels

Instructions written at a parent level also apply to M89.7.

Broader instructions also apply from M86-M90 Other osteopathies and Chapter 13: Diseases of the musculoskeletal system and connective tissue.

Codes whose notes reference M89.7

  • C40Use additional code
  • M80Use additional code
  • M81Use additional code
  • M86Use additional code
  • M87Use additional code
  • M89.5Use additional code
  • T84.05Use additional code

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 M89.7

Is M89.7 billable?

No. M89.7 is a header code. Report one of its more specific subcodes instead.