Skip to main content

T85.191A vs T85.191S

T85.191A (Other mechanical complication of implanted electronic neurostimulator of peripheral nerve electrode (lead), initial encounter) compared with T85.191S (Other mechanical complication of implanted electronic neurostimulator of peripheral nerve electrode (lead), sequela), from the official CMS tabular data. T85.191A and T85.191S code the same injury at a different phase of treatment.

Relationship

Review

Encounter relationship

T85.191A
Initial encounter
Other mechanical complication of implanted electronic neurostimulator of peripheral nerve electrode (lead), initial encounter
↔
T85.191S
Sequela
Other mechanical complication of implanted electronic neurostimulator of peripheral nerve electrode (lead), 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. T85.191A and T85.191S 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

T85.191AOther mechanical complication of implanted electronic neurostimulator of peripheral nerve electrode (lead), initial encounterT85.191SOther mechanical complication of implanted electronic neurostimulator of peripheral nerve electrode (lead), 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 mechanical complication of implanted electronic neurostimulator of peripheral nerve electrode (lead), initial encounter is a billable ICD-10-CM diagnosis code (T85.191A).Other mechanical complication of implanted electronic neurostimulator of peripheral nerve electrode (lead), sequela is a billable ICD-10-CM diagnosis code (T85.191S).
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
Includes
Other mechanical complication of electrode (lead) for cranial nerve neurostimulators
Other mechanical complication of electrode (lead) for gastric neurostimulator
Other mechanical complication of electrode (lead) for sacral nerve neurostimulator
Other mechanical complication of electrode (lead) for vagal nerve neurostimulators
Other mechanical complication of electrode (lead) for cranial nerve neurostimulators
Other mechanical complication of electrode (lead) for gastric neurostimulator
Other mechanical complication of electrode (lead) for sacral nerve neurostimulator
Other mechanical complication of electrode (lead) for vagal nerve neurostimulators
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)
Edit this comparisonCheck a whole claim

Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources