T42.5X6S ICD-10-CM Code: Underdosing of mixed antiepileptics, sequela
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
T42.5X6SUnderdosing of mixed antiepileptics, sequela
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where T42.5X6S 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 T42.5X6
Underdosing of mixed antiepileptics
- 5
Code T42.5X6S
Underdosing of mixed antiepileptics, sequela
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for T42.5X6S.
Code first
No “code first” instruction is listed for T42.5X6S.
Use additional code
No “use additional code” instruction is listed for T42.5X6S.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for T42.5X6S.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for T42.5X6S.
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 T42.5X6S mean?
T42.5X6S is the FY 2027 U.S. ICD-10-CM code for “Underdosing of mixed antiepileptics, sequela.”
Is T42.5X6S a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, T42.5X6S 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 T42.5X6S located in ICD-10-CM?
T42.5X6S 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 T42.5X6, Underdosing of mixed antiepileptics.
What coding notes are listed for T42.5X6S?
No inclusion terms are listed for T42.5X6S in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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