M86.8X
Other osteomyelitis
M86.8X is a non-billable ICD-10-CM code header for other osteomyelitis. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are M86.8X0 Other osteomyelitis, multiple sites; M86.8X1 Other osteomyelitis, shoulder; M86.8X2 Other osteomyelitis, upper arm; M86.8X3 Other osteomyelitis, forearm and 6 more. Its coding notes include a Use additional code instruction, 5 Excludes1 entries and 14 Excludes2 entries.
Use additional code
Add the listed code as a secondary code, if known.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (10 notes)
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Notes
Also from chapter/block level (1 note)
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 3 entries
- Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic), Brodie's (localized) (chronic)
- Brodie's abscess or disease
- Osteomyelitis (general) (infective) (localized) (neonatal) (purulent) (septic) (staphylococcal) (streptococcal) (suppurative) (with periostitis), specified type NEC
More specific codes under M86.8X 10
- M86.8X0Other osteomyelitis, multiple sitesBillable
- M86.8X1Other osteomyelitis, shoulderHeader
- M86.8X2Other osteomyelitis, upper armHeader
- M86.8X3Other osteomyelitis, forearmHeader
- M86.8X4Other osteomyelitis, handHeader
- M86.8X5Other osteomyelitis, thighHeader
- M86.8X6Other osteomyelitis, lower legHeader
- M86.8X7Other osteomyelitis, ankle and footHeader
- M86.8X8Other osteomyelitis, other siteHeader
- M86.8X9Other osteomyelitis, unspecified sitesBillable