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T26.82XA vs T26.82XD

T26.82XA (Corrosions of other specified parts of left eye and adnexa, initial encounter) compared with T26.82XD (Corrosions of other specified parts of left eye and adnexa, subsequent encounter), from the official CMS tabular data. T26.82XA and T26.82XD code the same injury at a different phase of treatment. MedCoder-derived

Relationship

Review

Encounter relationship

T26.82XA
Initial encounter
Corrosions of other specified parts of left eye and adnexa, initial encounter
↔
T26.82XD
Subsequent encounter
Corrosions of other specified parts of left eye and adnexa, 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. T26.82XA and T26.82XD 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

T26.82XACorrosions of other specified parts of left eye and adnexa, initial encounterT26.82XDCorrosions of other specified parts of left eye and adnexa, 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)
DefinitionCorrosions of other specified parts of left eye and adnexa, initial encounter is a billable ICD-10-CM diagnosis code (T26.82A).Corrosions of other specified parts of left eye and adnexa, subsequent encounter is a billable ICD-10-CM diagnosis code (T26.82D).
7th characterThe appropriate 7th character is to be added to each code from category T26The appropriate 7th character is to be added to each code from category T26
Use additional code
external cause code to identify place (Y92)
external cause code to identify place (Y92)
Code first
(T51-T65) to identify chemical and intent
(T51-T65) to identify chemical and intent
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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