FY2027 ICD-10-CM reference
M90: Osteopathies in diseases classified elsewhere
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Osteopathies in diseases classified elsewhere. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
More specific FY2027 codes
- M90.5: Osteonecrosis in diseases classified elsewhereNonbillable heading
- M90.6: Osteitis deformans in neoplastic diseasesNonbillable heading
- M90.8: Osteopathy in diseases classified elsewhereNonbillable heading
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Instructional note
Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Source: M00-M99 (chapter, inherited).
Excludes2
arthropathic psoriasis (L40.5-)
Source: M00-M99 (chapter, inherited).
Excludes2
certain conditions originating in the perinatal period (P04-P96)
Source: M00-M99 (chapter, inherited).
Excludes2
certain infectious and parasitic diseases (A00-B99)
Source: M00-M99 (chapter, inherited).
Excludes2
compartment syndrome (traumatic) (T79.A-)
Source: M00-M99 (chapter, inherited).
Excludes2
complications of pregnancy, childbirth and the puerperium (O00-O9A)
Source: M00-M99 (chapter, inherited).
Excludes2
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
Source: M00-M99 (chapter, inherited).
Excludes2
endocrine, nutritional and metabolic diseases (E00-E88)
Source: M00-M99 (chapter, inherited).
Excludes2
injury, poisoning and certain other consequences of external causes (S00-T88)
Source: M00-M99 (chapter, inherited).
Excludes2
neoplasms (C00-D49)
Source: M00-M99 (chapter, inherited).
Excludes2
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Source: M00-M99 (chapter, inherited).
Excludes1
postprocedural osteopathies (M96.-)
Source: M86-M90 (section, inherited).
Excludes1
osteochondritis, osteomyelitis, and osteopathy (in):
Source: M90 (category, direct).
Excludes1
cryptococcosis (B45.3)
Source: M90 (category, direct).
Excludes1
diabetes mellitus (E08-E13 with .69-)
Source: M90 (category, direct).
Excludes1
gonococcal (A54.43)
Source: M90 (category, direct).
Excludes1
neurogenic syphilis (A52.11)
Source: M90 (category, direct).
Excludes1
renal osteodystrophy (N25.0)
Source: M90 (category, direct).
Excludes1
salmonellosis (A02.24)
Source: M90 (category, direct).
Excludes1
secondary syphilis (A51.46)
Source: M90 (category, direct).
Excludes1
syphilis (late) (A52.77)
Source: M90 (category, direct).
Compare the FY2027 additions, removals and billable-status changes
What does M90 mean in FY2027?
The official ICD-10-CM descriptor is Osteopathies in diseases classified elsewhere. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is M90 billable in FY2027?
The FY2027 order file marks M90 as a nonbillable heading. Select a complete billable child code.
Does M90 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition