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M84.421G vs M84.429G

M84.421G (Pathological fracture, right humerus, subsequent encounter for fracture with delayed healing) compared with M84.429G (Pathological fracture, unspecified humerus, subsequent encounter for fracture with delayed healing), from the official CMS tabular data. M84.421G and M84.429G code the same condition on opposite sides.

Relationship

Review

Laterality relationship

M84.421G
Right
Pathological fracture, right humerus, subsequent encounter for fracture with delayed healing
↔
M84.429G
Unspecified
Pathological fracture, unspecified humerus, subsequent encounter for fracture with delayed healing

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. M84.421G and M84.429G 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

M84.421GPathological fracture, right humerus, subsequent encounter for fracture with delayed healingM84.429GPathological fracture, unspecified humerus, subsequent encounter for fracture with delayed healing
Billing statusBillableBillable
ClassificationM00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)M00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)
DefinitionPathological fracture, right humerus, subsequent encounter for fracture with delayed healing is a billable ICD-10-CM diagnosis code (M84.421G).Pathological fracture, unspecified humerus, subsequent encounter for fracture with delayed healing is a billable ICD-10-CM diagnosis code (M84.429G).
7th characterThe appropriate 7th character is to be added to each code from subcategory M84.4:The appropriate 7th character is to be added to each code from subcategory M84.4:
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources