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S90.464S vs S90.466S

S90.464S (Insect bite (nonvenomous), right lesser toe(s), sequela) compared with S90.466S (Insect bite (nonvenomous), unspecified lesser toe(s), sequela), from the official CMS tabular data. S90.464S and S90.466S code the same condition on opposite sides. MedCoder-derived

Relationship

Review

Laterality relationship

S90.464S
Right
Insect bite (nonvenomous), right lesser toe(s), sequela
S90.466S
Unspecified
Insect bite (nonvenomous), unspecified lesser toe(s), 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. S90.464S and S90.466S 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

S90.464SInsect bite (nonvenomous), right lesser toe(s), sequelaS90.466SInsect bite (nonvenomous), unspecified lesser toe(s), sequela
Billing statusBillableBillable
ClassificationS00-T88 — Injury, poisoning and certain other consequences of external causesS00-T88 — Injury, poisoning and certain other consequences of external causes
DefinitionInsect bite (nonvenomous), right lesser toe(s), sequela is a billable ICD-10-CM diagnosis code (S90.464S).Insect bite (nonvenomous), unspecified lesser toe(s), sequela is a billable ICD-10-CM diagnosis code (S90.466S).
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