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S66.892A vs S66.892S

S66.892A (Other injury of other specified muscles, fascia and tendons at wrist and hand level, left hand, initial encounter) compared with S66.892S (Other injury of other specified muscles, fascia and tendons at wrist and hand level, left hand, sequela), from the official CMS tabular data. S66.892A and S66.892S code the same injury at a different phase of treatment. MedCoder-derived

Relationship

Review

Encounter relationship

S66.892A
Initial encounter
Other injury of other specified muscles, fascia and tendons at wrist and hand level, left hand, initial encounter
S66.892S
Sequela
Other injury of other specified muscles, fascia and tendons at wrist and hand level, left hand, 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. S66.892A and S66.892S 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

S66.892AOther injury of other specified muscles, fascia and tendons at wrist and hand level, left hand, initial encounterS66.892SOther injury of other specified muscles, fascia and tendons at wrist and hand level, left hand, 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)
DefinitionOther injury of other specified muscles, fascia and tendons at wrist and hand level, left hand, initial encounter is a billable ICD-10-CM diagnosis code (S66.892A).Other injury of other specified muscles, fascia and tendons at wrist and hand level, left hand, sequela is a billable ICD-10-CM diagnosis code (S66.892S).
7th characterThe appropriate 7th character is to be added to each code from category S66The appropriate 7th character is to be added to each code from category S66

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