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S86.911A vs S86.912A

S86.911A (Strain of unspecified muscle(s) and tendon(s) at lower leg level, right leg, initial encounter) compared with S86.912A (Strain of unspecified muscle(s) and tendon(s) at lower leg level, left leg, initial encounter), from the official CMS tabular data. S86.911A and S86.912A code the same condition on opposite sides.

Relationship

Review

Laterality relationship

S86.911A
Right
Strain of unspecified muscle(s) and tendon(s) at lower leg level, right leg, initial encounter
↔
S86.912A
Left
Strain of unspecified muscle(s) and tendon(s) at lower leg level, left leg, 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. S86.911A and S86.912A 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

S86.911AStrain of unspecified muscle(s) and tendon(s) at lower leg level, right leg, initial encounterS86.912AStrain of unspecified muscle(s) and tendon(s) at lower leg level, left leg, 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)
DefinitionStrain of unspecified muscle(s) and tendon(s) at lower leg level, right leg, initial encounter is a billable ICD-10-CM diagnosis code (S86.911A).Strain of unspecified muscle(s) and tendon(s) at lower leg level, left leg, initial encounter is a billable ICD-10-CM diagnosis code (S86.912A).
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
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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