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S96.919A vs S96.919S

S96.919A (Strain of unspecified muscle and tendon at ankle and foot level, unspecified foot, initial encounter) compared with S96.919S (Strain of unspecified muscle and tendon at ankle and foot level, unspecified foot, sequela), from the official CMS tabular data. S96.919A and S96.919S code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

S96.919A
Initial encounter
Strain of unspecified muscle and tendon at ankle and foot level, unspecified foot, initial encounter
S96.919S
Sequela
Strain of unspecified muscle and tendon at ankle and foot level, unspecified foot, sequela

Same underlying diagnosis, different encounter phase.

The 7th character records the phase of care for the encounter being coded, so a single encounter takes one of these characters, not several. Review whether both phases belong on the same episode of care.

Source: ICD-10-CM Official Guidelines, Section I.C.19.a

Can these codes be reported together?

Same injury, other encounter phase. S96.919A and S96.919S code the same injury at a different phase of treatment, set by the 7th character.

The 7th character records the type of care given at the encounter being coded (ICD-10-CM Official Guidelines, Section I.C.19.a), so one encounter takes one of these, not both.

Side by side

S96.919AStrain of unspecified muscle and tendon at ankle and foot level, unspecified foot, initial encounterS96.919SStrain of unspecified muscle and tendon at ankle and foot level, unspecified foot, 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 unspecified muscle and tendon at ankle and foot level, unspecified foot, initial encounter is a billable ICD-10-CM diagnosis code (S96.919A).Strain of unspecified muscle and tendon at ankle and foot level, unspecified foot, sequela is a billable ICD-10-CM diagnosis code (S96.919S).
7th characterThe appropriate 7th character is to be added to each code from category S96The appropriate 7th character is to be added to each code from category S96

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