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S85.499A vs S85.499S

S85.499A (Other specified injury of lesser saphenous vein at lower leg level, unspecified leg, initial encounter) compared with S85.499S (Other specified injury of lesser saphenous vein at lower leg level, unspecified leg, sequela), from the official CMS tabular data. S85.499A and S85.499S code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

S85.499A
Initial encounter
Other specified injury of lesser saphenous vein at lower leg level, unspecified leg, initial encounter
S85.499S
Sequela
Other specified injury of lesser saphenous vein at lower leg level, unspecified leg, 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. S85.499A and S85.499S 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

S85.499AOther specified injury of lesser saphenous vein at lower leg level, unspecified leg, initial encounterS85.499SOther specified injury of lesser saphenous vein at lower leg level, unspecified leg, sequela
Billing statusBillableBillable
ClassificationS00-T88 — Injury, poisoning and certain other consequences of external causesS00-T88 — Injury, poisoning and certain other consequences of external causes
DefinitionOther specified injury of lesser saphenous vein at lower leg level, unspecified leg, initial encounter is a billable ICD-10-CM diagnosis code (S85.499A).Other specified injury of lesser saphenous vein at lower leg level, unspecified leg, sequela is a billable ICD-10-CM diagnosis code (S85.499S).
7th characterThe appropriate 7th character is to be added to each code from category S85The appropriate 7th character is to be added to each code from category S85

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