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S86.301S vs S86.302S

S86.301S (Unspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, right leg, sequela) compared with S86.302S (Unspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, left leg, sequela), from the official CMS tabular data. S86.301S and S86.302S code the same condition on opposite sides.

Relationship

Review

Laterality relationship

S86.301S
Right
Unspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, right leg, sequela
S86.302S
Left
Unspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, left leg, 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. S86.301S and S86.302S 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

S86.301SUnspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, right leg, sequelaS86.302SUnspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, left leg, sequela
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 muscle(s) and tendon(s) of peroneal muscle group at lower leg level, right leg, sequela is a billable ICD-10-CM diagnosis code (S86.301S).Unspecified injury of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, left leg, sequela is a billable ICD-10-CM diagnosis code (S86.302S).
7th characterThe appropriate 7th character is to be added to each code from category S86The appropriate 7th character is to be added to each code from category S86

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