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S65.912A vs S65.912D

S65.912A (Laceration of unspecified blood vessel at wrist and hand level of left arm, initial encounter) compared with S65.912D (Laceration of unspecified blood vessel at wrist and hand level of left arm, subsequent encounter), from the official CMS tabular data. S65.912A and S65.912D code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

S65.912A
Initial encounter
Laceration of unspecified blood vessel at wrist and hand level of left arm, initial encounter
↔
S65.912D
Subsequent encounter
Laceration of unspecified blood vessel at wrist and hand level of left arm, subsequent encounter

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. S65.912A and S65.912D 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

S65.912ALaceration of unspecified blood vessel at wrist and hand level of left arm, initial encounterS65.912DLaceration of unspecified blood vessel at wrist and hand level of left arm, subsequent encounter
Billing statusBillableBillable
ClassificationS00-T88 — Injury, poisoning and certain other consequences of external causesS00-T88 — Injury, poisoning and certain other consequences of external causes
DefinitionLaceration of unspecified blood vessel at wrist and hand level of left arm, initial encounter is a billable ICD-10-CM diagnosis code (S65.912A).Laceration of unspecified blood vessel at wrist and hand level of left arm, subsequent encounter is a billable ICD-10-CM diagnosis code (S65.912D).
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