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S75.899A vs S75.899S

S75.899A (Other specified injury of other blood vessels at hip and thigh level, unspecified leg, initial encounter) compared with S75.899S (Other specified injury of other blood vessels at hip and thigh level, unspecified leg, sequela), from the official CMS tabular data. S75.899A and S75.899S code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

S75.899A
Initial encounter
Other specified injury of other blood vessels at hip and thigh level, unspecified leg, initial encounter
S75.899S
Sequela
Other specified injury of other blood vessels at hip and thigh 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. S75.899A and S75.899S 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

S75.899AOther specified injury of other blood vessels at hip and thigh level, unspecified leg, initial encounterS75.899SOther specified injury of other blood vessels at hip and thigh level, unspecified leg, 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 specified injury of other blood vessels at hip and thigh level, unspecified leg, initial encounter is a billable ICD-10-CM diagnosis code (S75.899A).Other specified injury of other blood vessels at hip and thigh level, unspecified leg, sequela is a billable ICD-10-CM diagnosis code (S75.899S).
7th characterThe appropriate 7th character is to be added to each code from category S75The appropriate 7th character is to be added to each code from category S75

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