ICD-10-CM › M00-M99 › M86-M90 › M86.2 Subacute osteomyelitis › M86.20
Subacute osteomyelitis, unspecified site
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Subacute osteomyelitis, unspecified site
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from M86 Osteomyelitis
Excludes1 - never coded here
- osteomyelitis due to:
- echinococcus (B67.2)
- gonococcus (A54.43)
- salmonella (A02.24)
Excludes2 - not included here
- ostemyelitis of:
- orbit (H05.0-)
- petrous bone (H70.2-)
- vertebra (M46.2-)
Use additional code
- code (B95-B97) to identify infectious agent
- code to identify major osseous defect, if applicable (M89.7-)
Inherited from the M86-M90 section Other osteopathies (M86-M90)
Excludes1 - never coded here
- postprocedural osteopathies (M96.-)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Osteitis
- Osteopathy
- Endosteitis
- Periostitis
- Abscess > serous
- Dactylitis > bone
- Ganglion > periosteal
- Infection, infected, infective > bone
- Suppuration, suppurative > pericranial
- Inflammation, inflamed, inflammatory > bone
- Inflammation, inflamed, inflammatory > orbit > acute > periostitis
- Osteomyelitis > subacute
Codes in the same group
| Code | Description | Status |
|---|---|---|
| M86.21 | Subacute osteomyelitis, shoulder | Not billable |
| M86.22 | Subacute osteomyelitis, humerus | Not billable |
| M86.23 | Subacute osteomyelitis, radius and ulna | Not billable |
| M86.24 | Subacute osteomyelitis, hand | Not billable |
| M86.25 | Subacute osteomyelitis, femur | Not billable |
| M86.26 | Subacute osteomyelitis, tibia and fibula | Not billable |
| M86.27 | Subacute osteomyelitis, ankle and foot | Not billable |
| M86.28 | Subacute osteomyelitis, other site | Valid |
| M86.29 | Subacute osteomyelitis, multiple sites | Valid |