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S65.009A vs S65.009S

S65.009A (Unspecified injury of ulnar artery at wrist and hand level of unspecified arm, initial encounter) compared with S65.009S (Unspecified injury of ulnar artery at wrist and hand level of unspecified arm, sequela), from the official CMS tabular data. S65.009A and S65.009S code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

S65.009A
Initial encounter
Unspecified injury of ulnar artery at wrist and hand level of unspecified arm, initial encounter
↔
S65.009S
Sequela
Unspecified injury of ulnar artery at wrist and hand level of unspecified arm, 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. S65.009A and S65.009S 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

S65.009AUnspecified injury of ulnar artery at wrist and hand level of unspecified arm, initial encounterS65.009SUnspecified injury of ulnar artery at wrist and hand level of unspecified arm, sequela
Billing statusBillableBillable
ClassificationS00-T88 — Injury, poisoning and certain other consequences of external causesS00-T88 — Injury, poisoning and certain other consequences of external causes
DefinitionUnspecified injury of ulnar artery at wrist and hand level of unspecified arm, initial encounter is a billable ICD-10-CM diagnosis code (S65.009A).Unspecified injury of ulnar artery at wrist and hand level of unspecified arm, sequela is a billable ICD-10-CM diagnosis code (S65.009S).
7th characterThe appropriate 7th character is to be added to each code from category S65The appropriate 7th character is to be added to each code from category S65
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources