M86.18
Other acute osteomyelitis, other site
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 18 never code together
M86code
M00-M99chapter
Excludes2
- arthropathic psoriasis (L40.5-)L40.5-
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- compartment syndrome (traumatic) (T79.A-)T79.A-
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 3
Index entries leading here 1
Alongside this code 9 same parent — M86.1
M86.10 Other acute osteomyelitis, unspecified site M86.11 Other acute osteomyelitis, shoulder category M86.12 Other acute osteomyelitis, humerus category M86.13 Other acute osteomyelitis, radius and ulna category M86.14 Other acute osteomyelitis, hand category M86.15 Other acute osteomyelitis, femur category M86.16 Other acute osteomyelitis, tibia and fibula category M86.17 Other acute osteomyelitis, ankle and foot category M86.19 Other acute osteomyelitis, multiple sites
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.