M90.80 Osteopathy in diseases classified elsewhere, unspecified site

Billable ICD-10-CM code, FY2026.

Applies from M90 Osteopathies in diseases classified elsewhere

Excludes1 (never code together)

• osteochondritis, osteomyelitis, and osteopathy (in):
• cryptococcosis (B45.3)
• diabetes mellitus (E08-E13 with .69-)
• gonococcal (A54.43)
• neurogenic syphilis (A52.11)
• renal osteodystrophy (N25.0)
• salmonellosis (A02.24)
• secondary syphilis (A51.46)
• syphilis (late) (A52.77)

Applies from M90.8 Osteopathy in diseases classified elsewhere

Code first

• underlying disease, such as:
• rickets (E55.0)
• vitamin-D-resistant rickets (E83.31)

MS-DRG index

Defines the logic of DRG(s) 553-554 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 731.8 Other bone involvement in diseases classified elsewhere (approximate)

Medicare Code Edits (MCE v43.1 (April 2026))

• Manifestation codes as principal diagnosis: Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and are not allowed as principal diagnosis.

Code annotations containing back-references to M90.80

Back-references to M90

• Type 1 Excludes: M87 Osteonecrosis ("osteochondropathies (M90-M93)")

Diagnosis Index entries for M90.80

• Caries › syphilitic › congenital (early)
• Mycetoma › bone (mycotic)
• Osteochondritis › syphilitic (congenital) (early)
• Osteochondropathy › syphilitic, congenital › early
• Osteochondropathy › syphilitic, congenital › late
• Osteomyelitis (general) (infective) (localized) (neonatal) (purulent) (septic) (staphylococcal) (streptococcal) (suppurative) (with periostitis) › syphilitic › congenital (early)
• Periostitis (albuminosa) (circumscribed) (diffuse) (infective) (monomelic) › syphilitic › congenital (early)
• Periostitis (albuminosa) (circumscribed) (diffuse) (infective) (monomelic) › yaws (hypertrophic) (early) (late)
• Rickets (active) (acute) (adolescent) (chest wall) (congenital) (current) (infantile) (intestinal) › vitamin-D-resistant
• Scurvy, scorbutic › rickets
• Syphilis, syphilitic (acquired) › osteochondritis (congenital) (early)
• Syphilis, syphilitic (acquired) › periosteum (late) › congenital (early)

Nearby codes

• M90.672 Osteitis deformans in neoplastic diseases, left ankle and foot
• M90.679 Osteitis deformans in neoplastic diseases, unspecified ankle and foot
• M90.68 Osteitis deformans in neoplastic diseases, other site
• M90.69 Osteitis deformans in neoplastic diseases, multiple sites
• M90.8 Osteopathy in diseases classified elsewhere
• M90.80 Osteopathy in diseases classified elsewhere, unspecified site (this code)
• M90.81 Osteopathy in diseases classified elsewhere, shoulder
• M90.811 Osteopathy in diseases classified elsewhere, right shoulder
• M90.812 Osteopathy in diseases classified elsewhere, left shoulder
• M90.819 Osteopathy in diseases classified elsewhere, unspecified shoulder
• M90.82 Osteopathy in diseases classified elsewhere, upper arm