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S96.129A vs S96.129S

S96.129A (Laceration of muscle and tendon of long extensor muscle of toe at ankle and foot level, unspecified foot, initial encounter) compared with S96.129S (Laceration of muscle and tendon of long extensor muscle of toe at ankle and foot level, unspecified foot, sequela), from the official CMS tabular data. S96.129A and S96.129S code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

S96.129A
Initial encounter
Laceration of muscle and tendon of long extensor muscle of toe at ankle and foot level, unspecified foot, initial encounter
S96.129S
Sequela
Laceration of muscle and tendon of long extensor muscle of toe 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. S96.129A and S96.129S 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

S96.129ALaceration of muscle and tendon of long extensor muscle of toe at ankle and foot level, unspecified foot, initial encounterS96.129SLaceration of muscle and tendon of long extensor muscle of toe 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)
DefinitionLaceration of muscle and tendon of long extensor muscle of toe at ankle and foot level, unspecified foot, initial encounter is a billable ICD-10-CM diagnosis code (S96.129A).Laceration of muscle and tendon of long extensor muscle of toe at ankle and foot level, unspecified foot, sequela is a billable ICD-10-CM diagnosis code (S96.129S).
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