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S86.991A vs S86.992A

S86.991A (Other injury of unspecified muscle(s) and tendon(s) at lower leg level, right leg, initial encounter) compared with S86.992A (Other injury of unspecified muscle(s) and tendon(s) at lower leg level, left leg, initial encounter), from the official CMS tabular data. S86.991A and S86.992A code the same condition on opposite sides.

Relationship

Review

Laterality relationship

S86.991A
Right
Other injury of unspecified muscle(s) and tendon(s) at lower leg level, right leg, initial encounter
S86.992A
Left
Other injury 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. S86.991A and S86.992A 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

S86.991AOther injury of unspecified muscle(s) and tendon(s) at lower leg level, right leg, initial encounterS86.992AOther injury 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)
DefinitionOther injury of unspecified muscle(s) and tendon(s) at lower leg level, right leg, initial encounter is a billable ICD-10-CM diagnosis code (S86.991A).Other injury of unspecified muscle(s) and tendon(s) at lower leg level, left leg, initial encounter is a billable ICD-10-CM diagnosis code (S86.992A).
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