T42.6X5A ICD-10-CM Code: Adverse effect of other antiepileptic and sedative-hypnotic drugs, initial 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
T42.6X5AAdverse effect of other antiepileptic and sedative-hypnotic drugs, initial encounter
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where T42.6X5A sits
- 1
Chapter 19
Injury, poisoning and certain other consequences of external causes (S00-T88)
- 2
Section
Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
- 3
Category T42
Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs
- 4
Subcategory T42.6X5
Adverse effect of other antiepileptic and sedative-hypnotic drugs
- 5
Code T42.6X5A
Adverse effect of other antiepileptic and sedative-hypnotic drugs, initial encounter
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for T42.6X5A.
Code first
No “code first” instruction is listed for T42.6X5A.
Use additional code
No “use additional code” instruction is listed for T42.6X5A.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for T42.6X5A.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for T42.6X5A.
Transparency
Source and release
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 sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code T42.6X5A mean?
T42.6X5A is the FY 2027 U.S. ICD-10-CM code for “Adverse effect of other antiepileptic and sedative-hypnotic drugs, initial encounter.”
Is T42.6X5A a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, T42.6X5A 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 T42.6X5A located in ICD-10-CM?
T42.6X5A 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 T42, Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs and subcategory T42.6X5, Adverse effect of other antiepileptic and sedative-hypnotic drugs.
What coding notes are listed for T42.6X5A?
No inclusion terms are listed for T42.6X5A in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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