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S42.392 vs S42.399

S42.392 (Other fracture of shaft of left humerus) compared with S42.399 (Other fracture of shaft of unspecified humerus), from the official CMS tabular data. S42.392 and S42.399 code the same condition on opposite sides.

Relationship

Review

Laterality relationship

S42.392
Left
Other fracture of shaft of left humerus
S42.399
Unspecified
Other fracture of shaft of unspecified humerus

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. S42.392 and S42.399 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

S42.392Other fracture of shaft of left humerusS42.399Other fracture of shaft of unspecified humerus
Billing statusNon-billable header

Report instead: S42.392A, S42.392B, S42.392D, S42.392G, S42.392K

Non-billable header

Report instead: S42.399A, S42.399B, S42.399D, S42.399G, S42.399K

ClassificationS00-T88 — Injury, poisoning and certain other consequences of external causesS00-T88 — Injury, poisoning and certain other consequences of external causes
DefinitionOther fracture of shaft of left humerus is a non-billable ICD-10-CM category code (S42.392).Other fracture of shaft of unspecified humerus is a non-billable ICD-10-CM category code (S42.399).
7th characterThe appropriate 7th character is to be added to all codes from category S42The appropriate 7th character is to be added to all codes from category S42
Includes
injuries of axilla
injuries of scapular region
injuries of axilla
injuries of scapular region

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