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S86.311S vs S86.319S

S86.311S (Strain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, right leg, sequela) compared with S86.319S (Strain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg, sequela), from the official CMS tabular data. S86.311S and S86.319S code the same condition on opposite sides. MedCoder-derived

Relationship

Review

Laterality relationship

S86.311S
Right
Strain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, right leg, sequela
S86.319S
Unspecified
Strain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified 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. S86.311S and S86.319S 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

S86.311SStrain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, right leg, sequelaS86.319SStrain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified 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)
DefinitionStrain 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 (S86.311S).Strain of muscle(s) and tendon(s) of peroneal muscle group at lower leg level, unspecified leg, sequela is a billable ICD-10-CM diagnosis code (S86.319S).
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