ICD-10-CM 2027 diagnosis code
M86.8Other osteomyelitis
M86.8 is a header code, so it can't be reported by itself. Choose one of the 1 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 M86.8
M86.8 is the ICD-10-CM diagnosis code for other osteomyelitis. It belongs to category M86 (osteomyelitis), 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 1 subcodes must be used instead.
Within M86, choose M86.8 (Other osteomyelitis) only when documentation doesn't support a more specific option: acute hematogenous osteomyelitis (M86.0), other acute osteomyelitis (M86.1), subacute osteomyelitis (M86.2), chronic multifocal osteomyelitis (M86.3), chronic osteomyelitis with draining sinus (M86.4), other chronic hematogenous osteomyelitis (M86.5), other chronic osteomyelitis (M86.6) and unspecified (M86.9).
To report this condition, pick the subcode that matches the documentation: M86.8X (osteomyelitis).
Use an additional code (B95-B97) to identify infectious agent. Use an additional code to identify major osseous defect, if applicable (M89.7-).
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 M86.8
- M86.8XOther osteomyelitis
- M86.8X0Other osteomyelitis, multiple sitesBillable
- M86.8X1Other osteomyelitis, shoulder
- M86.8X2Other osteomyelitis, upper arm
- M86.8X3Other osteomyelitis, forearm
- M86.8X4Other osteomyelitis, hand
- M86.8X5Other osteomyelitis, thigh
- M86.8X6Other osteomyelitis, lower leg
- M86.8X7Other osteomyelitis, ankle and foot
- M86.8X8Other osteomyelitis, other site
- M86.8X9Other osteomyelitis, unspecified sitesBillable
Coding notes
- Brodie's abscess
Notes that apply from higher levels
Instructions written at a parent level also apply to M86.8.
› From M86 Osteomyelitis
Broader instructions also apply from M86-M90 Other osteopathies and 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 M86.8
Is M86.8 billable?
- No. M86.8 is a header code. Report one of its more specific subcodes instead.