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M84.642 vs M84.649

M84.642 (Pathological fracture in other disease, left hand) compared with M84.649 (Pathological fracture in other disease, unspecified hand), from the official CMS tabular data. M84.642 and M84.649 code the same condition on opposite sides. MedCoder-derived

Relationship

Review

Laterality relationship

M84.642
Left
Pathological fracture in other disease, left hand
M84.649
Unspecified
Pathological fracture in other disease, unspecified hand

Same condition; these differ only in which side is documented.

These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.

Source: ICD-10-CM tabular list (laterality variant derived from the code title)

Can these codes be reported together?

Same condition, opposite side. M84.642 and M84.649 name the same condition on opposite sides of the body.

Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.

Side by side

M84.642Pathological fracture in other disease, left handM84.649Pathological fracture in other disease, unspecified hand
Billing statusNon-billable header

Report instead: M84.642A, M84.642D, M84.642G, M84.642K, M84.642P

Non-billable header

Report instead: M84.649A, M84.649D, M84.649G, M84.649K, M84.649P

ClassificationM00-M99 — Diseases of the musculoskeletal system and connective tissueM00-M99 — Diseases of the musculoskeletal system and connective tissue
DefinitionPathological fracture in other disease, left hand is a non-billable ICD-10-CM category code (M84.642).Pathological fracture in other disease, unspecified hand is a non-billable ICD-10-CM category code (M84.649).
7th characterThe appropriate 7th character is to be added to each code from subcategory M84.6:The appropriate 7th character is to be added to each code from subcategory M84.6:

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