ICD-10-CM 2027 diagnosis code

M84Disorder of continuity of bone

Not billable — use a more specific code

M84 is a header code, so it can't be reported by itself. Choose one of the 7 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 M84

M84 is the ICD-10-CM diagnosis code for disorder of continuity of bone. 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 7 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: M84.3 (fracture), M84.4 (classified), M84.5 (disease), M84.6 (disease), M84.7 (classified), M84.8 (bone) and M84.9 (unspecified).

The conditions in its Excludes2 note aren't part of M84, but may be coded alongside it if the patient has both: traumatic fracture of bone-see fracture, by site.

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 M84

Coding notes

Excludes2Not included here — may be reported together if both conditions exist

traumatic fracture of bone-see fracture, by site

Notes that apply from higher levels

Instructions written at a parent level also apply to M84.

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

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about M84

Is M84 billable?: No. M84 is a header code. Report one of its more specific subcodes instead.