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S55.801A vs S55.809A

S55.801A (Unspecified injury of other blood vessels at forearm level, right arm, initial encounter) compared with S55.809A (Unspecified injury of other blood vessels at forearm level, unspecified arm, initial encounter), from the official CMS tabular data. S55.801A and S55.809A code the same condition on opposite sides.

Relationship

Review

Laterality relationship

S55.801A
Right
Unspecified injury of other blood vessels at forearm level, right arm, initial encounter
↔
S55.809A
Unspecified
Unspecified injury of other blood vessels at forearm level, unspecified arm, initial encounter

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. S55.801A and S55.809A 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

S55.801AUnspecified injury of other blood vessels at forearm level, right arm, initial encounterS55.809AUnspecified injury of other blood vessels at forearm level, unspecified arm, initial encounter
Billing statusBillableBillable
ClassificationS00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)
DefinitionUnspecified injury of other blood vessels at forearm level, right arm, initial encounter is a billable ICD-10-CM diagnosis code (S55.801A).Unspecified injury of other blood vessels at forearm level, unspecified arm, initial encounter is a billable ICD-10-CM diagnosis code (S55.809A).
7th characterThe appropriate 7th character is to be added to each code from category S55The appropriate 7th character is to be added to each code from category S55
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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