M86.021
✓ BillableAcute hematogenous osteomyelitis, right humerus
Diseases of the musculoskeletal system and connective tissue (M00-M99)
❌ Excludes1
inheritedRules inherited from parent codes in the hierarchy.
- • osteomyelitis due to:
- • echinococcus (B67.2)
- • gonococcus (A54.43)
- • salmonella (A02.24)
⚠️ Excludes2
inheritedRules inherited from parent codes.
- • ostemyelitis of:
- • orbit (H05.0-)
- • petrous bone (H70.2-)
- • vertebra (M46.2-)
Clinical Description
ICD-10-CM code M86.021 represents acute hematogenous osteomyelitis, right humerus. This code falls under the Diseases of the musculoskeletal system and connective tissue (M00-M99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 7-character code at the 6th level of specificity. This is the most specific code available in this subcategory. Coders should note that M86.021 has 4 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.
Frequently Asked Questions
What is ICD-10 code M86.021?
ICD-10-CM code M86.021 is "Acute hematogenous osteomyelitis, right humerus". It belongs to the category: Diseases of the musculoskeletal system and connective tissue (M00-M99).
Is M86.021 a billable ICD-10 code?
Yes, M86.021 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
What codes are excluded with M86.021?
M86.021 has 4 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
Can M86.021 be coded with other codes?
M86.021 has 4 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.
Related Codes in M86.02
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)