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S61.310A vs S61.311A

S61.310A (Laceration without foreign body of right index finger with damage to nail, initial encounter) compared with S61.311A (Laceration without foreign body of left index finger with damage to nail, initial encounter), from the official CMS tabular data. S61.310A and S61.311A code the same condition on opposite sides.

Relationship

Review

Laterality relationship

S61.310A
Right
Laceration without foreign body of right index finger with damage to nail, initial encounter
↔
S61.311A
Left
Laceration without foreign body of left index finger with damage to nail, 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. S61.310A and S61.311A 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

S61.310ALaceration without foreign body of right index finger with damage to nail, initial encounterS61.311ALaceration without foreign body of left index finger with damage to nail, 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)
DefinitionLaceration without foreign body of right index finger with damage to nail, initial encounter is a billable ICD-10-CM diagnosis code (S61.310A).Laceration without foreign body of left index finger with damage to nail, initial encounter is a billable ICD-10-CM diagnosis code (S61.311A).
7th characterThe appropriate 7th character is to be added to each code from category S61The appropriate 7th character is to be added to each code from category S61
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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