T36 vs T82.41XS

T36 (Poisoning by, adverse effect of and underdosing of systemic antibiotics) compared with T82.41XS (Breakdown (mechanical) of vascular dialysis catheter, sequela), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Relationship

Sequencing

Additional-code relationship

T82.41XS

Breakdown (mechanical) of vascular dialysis catheter, sequela

→

T36

Poisoning by, adverse effect of and underdosing of systemic antibiotics

Add a secondary code when documented.

“code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)”

A "Use additional code" note means a secondary code should follow this one to fully describe the condition when the documentation supports it.

Source: CMS ICD-10-CM tabular instructional notes

Informational

Excludes2 relationship

T82.41XS

Breakdown (mechanical) of vascular dialysis catheter, sequela

↔

T36

Poisoning by, adverse effect of and underdosing of systemic antibiotics

Distinct conditions — both may be reported.

“poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4 or 6)”

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source: CMS ICD-10-CM tabular instructional notes

Can these codes be reported together?

Yes, when both are documented. T82.41XS carries an Excludes2 note covering T36: “poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4 or 6)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Sequencing on the claim

1stT82.41XS then T36

T82.41XS carries a Use Additional Code instruction covering T36: “code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)”

Side by side

	T36Poisoning by, adverse effect of and underdosing of systemic antibiotics	T82.41XSBreakdown (mechanical) of vascular dialysis catheter, sequela
Billing status	Non-billable header Report instead: T36.0X1A, T36.0X1D, T36.0X1S, T36.0X2A, T36.0X2D	Billable
Classification	S00-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)
Definition	Poisoning by, adverse effect of and underdosing of systemic antibiotics is a non-billable ICD-10-CM category code (T36).	Breakdown (mechanical) of vascular dialysis catheter, sequela is a billable ICD-10-CM diagnosis code (T82.41S).
7th character	The appropriate 7th character is to be added to each code from category T36	The appropriate 7th character is to be added to each code from category T82
Includes	adverse effect of correct substance properly administered poisoning by overdose of substance poisoning by wrong substance given or taken in error underdosing by (inadvertently) (deliberately) taking less substance than prescribed or instructed	—
Use additional code	code(s) to specify: manifestations of poisoning underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9)	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 first	, for adverse effects, the nature of the adverse effect, such as: adverse effect NOS (T88.7)	—

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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