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M86.6

Other chronic osteomyelitis

Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 18 never code together
M86code
Excludes1
  • osteomyelitis due to:
  • echinococcus (B67.2)B67.2
  • gonococcus (A54.43)A54.43
  • salmonella (A02.24)A02.24
Excludes2
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
M86code
Use additional code
  • code (B95-B97) to identify infectious agentB95-B97
  • code to identify major osseous defect, if applicable (M89.7-)M89.7-
M00-M99chapter
Notes
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Index entries leading here filed at null

No alphabetic index entry points at this code.

Alongside this code 8 same parent — M86
M86.0 Acute hematogenous osteomyelitis category M86.1 Other acute osteomyelitis category M86.2 Subacute osteomyelitis category M86.3 Chronic multifocal osteomyelitis category M86.4 Chronic osteomyelitis with draining sinus category M86.5 Other chronic hematogenous osteomyelitis category M86.8 Other osteomyelitis category M86.9 Osteomyelitis, unspecified
Subordinate codes 10
M86.60 Other chronic osteomyelitis, unspecified site M86.61 Other chronic osteomyelitis, shoulder M86.62 Other chronic osteomyelitis, humerus M86.63 Other chronic osteomyelitis, radius and ulna M86.64 Other chronic osteomyelitis, hand M86.65 Other chronic osteomyelitis, thigh M86.66 Other chronic osteomyelitis, tibia and fibula M86.67 Other chronic osteomyelitis, ankle and foot M86.68 Other chronic osteomyelitis, other site M86.69 Other chronic 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.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
no
Code set
FY2026
Parent
M86
Block
M80-M94
Siblings
8
Subordinate
10

Present FY2024–FY2027.