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S44.00XS vs S44.01XS

S44.00XS (Injury of ulnar nerve at upper arm level, unspecified arm, sequela) compared with S44.01XS (Injury of ulnar nerve at upper arm level, right arm, sequela), from the official CMS tabular data. S44.00XS and S44.01XS code the same condition on opposite sides. MedCoder-derived

Relationship

Review

Laterality relationship

S44.00XS
Unspecified
Injury of ulnar nerve at upper arm level, unspecified arm, sequela
S44.01XS
Right
Injury of ulnar nerve at upper arm level, right arm, sequela

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. S44.00XS and S44.01XS 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

S44.00XSInjury of ulnar nerve at upper arm level, unspecified arm, sequelaS44.01XSInjury of ulnar nerve at upper arm level, right arm, sequela
Billing statusBillableBillable
ClassificationS00-T88 — Injury, poisoning and certain other consequences of external causesS00-T88 — Injury, poisoning and certain other consequences of external causes
DefinitionInjury of ulnar nerve at upper arm level, unspecified arm, sequela is a billable ICD-10-CM diagnosis code (S44.00S).Injury of ulnar nerve at upper arm level, right arm, sequela is a billable ICD-10-CM diagnosis code (S44.01S).
7th characterThe appropriate 7th character is to be added to each code from category S44The appropriate 7th character is to be added to each code from category S44
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