M86
Non-billableOsteomyelitis
Osteomyelitis
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- •postprocedural osteopathiesM96
- osteomyelitis due to:
- •echinococcusB67.2
- •gonococcusA54.43
- •salmonellaA02.24
Excludes 2
Conditions not included here, but the patient may have both
- •arthropathic psoriasisL40.5
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •compartment syndrome (traumatic)A-)T79
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- ostemyelitis of:
- •orbitH05.0
- •petrous boneH70.2
- •vertebraM46.2
Use Additional Code
Additional codes that should follow this code
Child Codes (9)
M86.0Acute hematogenous osteomyelitis
M86.1Other acute osteomyelitis
M86.2Subacute osteomyelitis
M86.3Chronic multifocal osteomyelitis
M86.4Chronic osteomyelitis with draining sinus
M86.5Other chronic hematogenous osteomyelitis
M86.6Other chronic osteomyelitis
M86.8Other osteomyelitis
M86.9Osteomyelitis, unspecified
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(13)
UMLS
- OM - OsteomyelitisC0029443
- OSTM - OsteomyelitisC0029443
- OsteomyelitidesC0029443
- OsteomyelitisC0029443
- Osteomyelitis (disorder)C0029443
- Osteomyelitis NOSC0029443
- Osteomyelitis, unspecifiedC0029443
- Pyogenic inflammation of boneC0029443
- Unspecified osteomyelitisC0029443
- Unspecified osteomyelitis, site unspecifiedC0029443
- a bacterial infection of the bone or bone marrowC0029443
- osteomyelitisC0029443
- unspecified osteomyelitisC0029443
Frequently Asked Questions
What is the ICD-10 code for osteomyelitis?
The ICD-10-CM code for osteomyelitis is M86. The full clinical description is "Osteomyelitis". M86 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code M86 mean?
ICD-10-CM code M86 represents “Osteomyelitis”. It is classified under Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue and is a non-billable header code. Use a more specific child code for billing purposes.
Is M86 a billable code?
No, M86 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 9 child codes under M86.
What chapter is M86 in?
M86 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M86?
M86 has Excludes1 notes indicating codes that cannot be used together with it, including: postprocedural osteopathies (M96.-); osteomyelitis due to:; echinococcus (B67.2); and 2 more.
What are the subcategories under M86?
M86 has 9 child codes, including: M86.0 (Acute hematogenous osteomyelitis), M86.1 (Other acute osteomyelitis), M86.2 (Subacute osteomyelitis), M86.3 (Chronic multifocal osteomyelitis), and 5 more.
Are additional codes required with M86?
Yes, when using M86, also report: code (B95-B97) to identify infectious agent.
What are the UMLS CUIs for M86?
M86 is linked to 1 UMLS Concept Unique Identifier: C0029443. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does M86 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like osteomyelitis affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of M86?
M86 maps to the ICD-11 code: FB84.Z (Osteomyelitis or osteitis, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.