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T85.890A vs T85.890S

T85.890A (Other specified complication of nervous system prosthetic devices, implants and grafts, initial encounter) compared with T85.890S (Other specified complication of nervous system prosthetic devices, implants and grafts, sequela), from the official CMS tabular data. T85.890A and T85.890S code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

T85.890A
Initial encounter
Other specified complication of nervous system prosthetic devices, implants and grafts, initial encounter
↔
T85.890S
Sequela
Other specified complication of nervous system prosthetic devices, implants and grafts, 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. T85.890A and T85.890S 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

T85.890AOther specified complication of nervous system prosthetic devices, implants and grafts, initial encounterT85.890SOther specified complication of nervous system prosthetic devices, implants and grafts, 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 complication of nervous system prosthetic devices, implants and grafts, initial encounter is a billable ICD-10-CM diagnosis code (T85.890A).Other specified complication of nervous system prosthetic devices, implants and grafts, sequela is a billable ICD-10-CM diagnosis code (T85.890S).
7th characterThe appropriate 7th character is to be added to each code from category T85The appropriate 7th character is to be added to each code from category T85
Use additional code
code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
code(s) to identify the specified condition resulting from the complication
code to identify devices involved and details of circumstances (Y62-Y82)
code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
code(s) to identify the specified condition resulting from the complication
code to identify devices involved and details of circumstances (Y62-Y82)
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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