Other osteopathies (M86-M90) ICD-10-CM
The M86–M90 section covers other osteopathies with 939 ICD-10-CM diagnosis codes, of which 732 are billable in fiscal year 2027. The section is organized into the 5 code ranges listed below.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- postprocedural osteopathies M96
Code Ranges in This Section 5 ranges · 939 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| M86 | Osteomyelitis (M86) | 262 | 195 |
| M87 | Osteonecrosis (M87) | 259 | 217 |
| M88 | Osteitis deformans [Paget's disease of bone] (M88) | 35 | 26 |
| M89 | Other disorders of bone (M89) | 286 | 222 |
| M90 | Osteopathies in diseases classified elsewhere (M90) | 97 | 72 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the M86–M90 Code Range
These bone conditions include inflammation caused by infection, death of all or part of a bone, and disorders associated with other diseases.
M86 covers osteomyelitis, bone inflammation caused by infection. Its subdivisions distinguish acute, subacute, and chronic forms, including chronic forms with a draining sinus. M87 covers osteonecrosis, the death of all or part of a bone. Its subdivisions distinguish cases linked to drugs, previous trauma, or other causes.
M88 groups osteitis deformans, also called Paget's disease of bone, by bone location. M89 brings together other bone disorders, including disorders of bone development and growth. M90 groups bone conditions named in connection with diseases classified elsewhere.
FY 2027 changes: The FY 2027 ICD-10-CM update, effective October 1, 2026, added M86.8X11, M86.8X12, M86.8X19, M86.8X21, M86.8X22, M86.8X29, M86.8X31, M86.8X32, M86.8X39, M86.8X41, M86.8X42, M86.8X49 and 12 other codes and deleted M86.8X1, M86.8X2, M86.8X3, M86.8X4, M86.8X5, M86.8X6, M86.8X7 and M86.8X8.
Questions About This Page
How many codes are in the M86-M90 range?
The M86-M90 range contains 939 ICD-10-CM diagnosis codes in FY 2027. 732 of them are billable, and the rest are category headers that organize the section.
What conditions does M86-M90 cover?
The range covers other osteopathies. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
