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U.S. ICD-10-CM · FY 2027

T50.A15D ICD-10-CM Code: Adverse effect of pertussis vaccine, including combinations with a pertussis component, subsequent encounter

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

T50.A15D

Adverse effect of pertussis vaccine, including combinations with a pertussis component, subsequent encounter

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where T50.A15D sits

  1. 1

    Chapter 19

    Injury, poisoning and certain other consequences of external causes (S00-T88)

  2. 2

    Section

    Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)

  3. 3

    Category T50

    Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances

  4. 4

    Subcategory T50.A15

    Adverse effect of pertussis vaccine, including combinations with a pertussis component

  5. 5

    Code T50.A15D

    Adverse effect of pertussis vaccine, including combinations with a pertussis component, subsequent encounter

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for T50.A15D.

Code first

No “code first” instruction is listed for T50.A15D.

Use additional code

No “use additional code” instruction is listed for T50.A15D.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for T50.A15D.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for T50.A15D.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code T50.A15D mean?

T50.A15D is the FY 2027 U.S. ICD-10-CM code for “Adverse effect of pertussis vaccine, including combinations with a pertussis component, subsequent encounter.”

Is T50.A15D a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, T50.A15D has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is T50.A15D located in ICD-10-CM?

T50.A15D is listed in Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88), within Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50) (T36–T50), under category T50, Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances and subcategory T50.A15, Adverse effect of pertussis vaccine, including combinations with a pertussis component.

What coding notes are listed for T50.A15D?

No inclusion terms are listed for T50.A15D in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

Keep exploring

Related T50.A15 codes

T50.A15A

Adverse effect of pertussis vaccine, including combinations with a pertussis component, initial encounter

T50.A15S

Adverse effect of pertussis vaccine, including combinations with a pertussis component, sequela

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