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S28.1XXA vs S28.1XXD

S28.1XXA (Traumatic amputation (partial) of part of thorax, except breast, initial encounter) compared with S28.1XXD (Traumatic amputation (partial) of part of thorax, except breast, subsequent encounter), from the official CMS tabular data. S28.1XXA and S28.1XXD code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

S28.1XXA
Initial encounter
Traumatic amputation (partial) of part of thorax, except breast, initial encounter
↔
S28.1XXD
Subsequent encounter
Traumatic amputation (partial) of part of thorax, except breast, 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. S28.1XXA and S28.1XXD 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

S28.1XXATraumatic amputation (partial) of part of thorax, except breast, initial encounterS28.1XXDTraumatic amputation (partial) of part of thorax, except breast, subsequent encounter
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)
DefinitionTraumatic amputation (partial) of part of thorax, except breast, initial encounter is a billable ICD-10-CM diagnosis code (S28.1A).Traumatic amputation (partial) of part of thorax, except breast, subsequent encounter is a billable ICD-10-CM diagnosis code (S28.1D).
7th characterThe appropriate 7th character is to be added to each code from category S28The appropriate 7th character is to be added to each code from category S28
Includes
injuries of breast
injuries of chest (wall)
injuries of interscapular area
injuries of breast
injuries of chest (wall)
injuries of interscapular area
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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