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H05.0 vs M86.8X41

H05.0 (Acute inflammation of orbit) compared with M86.8X41 (Other osteomyelitis, right hand), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2). MedCoder-derived

Relationship

Informational

Excludes2 relationship

M86.8X41
Other osteomyelitis, right hand
H05.0
Acute inflammation of orbit

Distinct conditions — both may be reported.

“orbit (H05.0-)”

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source: CMS ICD-10-CM tabular instructional notes

Can these codes be reported together?

Yes, when both are documented. M86.8X41 carries an Excludes2 note covering H05.0: “orbit (H05.0-)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

H05.0Acute inflammation of orbitM86.8X41Other osteomyelitis, right hand
Billing statusNon-billable header

Report instead: H05.00, H05.011, H05.012, H05.013, H05.019

Billable
ClassificationH00-H59 — Diseases of the Eye and Adnexa (H00-H59)M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)
DefinitionAcute inflammation of orbit is a non-billable ICD-10-CM category code (H05.0).Other osteomyelitis, right hand is a billable ICD-10-CM diagnosis code (M86.8X41).
Use additional code
code (B95-B97) to identify infectious agent
code to identify major osseous defect, if applicable (M89.7-)

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources