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S90.1 vs S90.31XS

S90.1 (Contusion of toe without damage to nail) compared with S90.31XS (Contusion of right foot, sequela), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2). MedCoder-derived

Relationship

Informational

Excludes2 relationship

S90.31XS
Contusion of right foot, sequela
S90.1
Contusion of toe without damage to nail

Distinct conditions — both may be reported.

“contusion of toes (S90.1-, S90.2-)”

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source: CMS ICD-10-CM tabular instructional notes

Can these codes be reported together?

Yes, when both are documented. S90.31XS carries an Excludes2 note covering S90.1: “contusion of toes (S90.1-, S90.2-)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

S90.1Contusion of toe without damage to nailS90.31XSContusion of right foot, sequela
Billing statusNon-billable header

Report instead: S90.111A, S90.111D, S90.111S, S90.112A, S90.112D

Billable
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)
DefinitionContusion of toe without damage to nail is a non-billable ICD-10-CM category code (S90.1).Contusion of right foot, sequela is a billable ICD-10-CM diagnosis code (S90.31XS).
7th characterThe appropriate 7th character is to be added to each code from category S90The appropriate 7th character is to be added to each code from category S90

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