T42.5X5

Non-billable

Adverse effect of mixed antiepileptics

Adverse effect of mixed antiepileptics

This is a header/category code. For billing purposes, use a more specific child code from the list below.

Status

Non-billable / Header

Block

T36-T50

Parent Code

T42.5X

Child Codes

3

Coding Notes

Includes

Conditions included under this code

  • 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

Excludes 1

Codes that cannot be used together with this code (mutual exclusion)

  • birth trauma (P10-P15)
  • obstetric trauma (O70-O71)
  • toxic reaction to local anesthesia in pregnancy (O29.3-)

Excludes 2

Conditions not included here, but the patient may have both

  • abuse and dependence of psychoactive substances (F10-F19)
  • abuse of non-dependence-producing substances (F55.-)
  • immunodeficiency due to drugs (D84.821)
  • drug reaction and poisoning affecting newborn (P00-P96)
  • pathological drug intoxication (inebriation) (F10-F19)
  • drug dependence and related mental and behavioral disorders due to psychoactive substance use (F10.--F19.-)

Code First

The underlying condition must be sequenced before this code

  • , for adverse effects, the nature of the adverse effect, such as:
  • adverse effect NOS (T88.7)
  • aspirin gastritis (K29.-)
  • blood disorders (D56-D76)
  • contact dermatitis (L23-L25)
  • dermatitis due to substances taken internally (L27.-)
  • nephropathy (N14.0-N14.2)

Use Additional Code

Additional codes that should follow this code

  • code to identify any retained foreign body, if applicable (Z18.-)
  • code(s) to specify:
  • manifestations of poisoning
  • underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9)
  • underdosing of medication regimen (Z91.12-, Z91.13-)

Child Codes (3)

Also Known As / Clinical Terms

Frequently Asked Questions

What is the ICD-10 code for adverse effect of mixed antiepileptics?

The ICD-10-CM code for adverse effect of mixed antiepileptics is T42.5X5. The full clinical description is "Adverse effect of mixed antiepileptics". T42.5X5 is a non-billable header code. Use a more specific child code for billing purposes.

What does ICD-10 code T42.5X5 mean?

ICD-10-CM code T42.5X5 represents "Adverse effect of mixed antiepileptics". It is classified under Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes and is a non-billable header code. Use a more specific child code for billing purposes.

Is T42.5X5 a billable code?

No, T42.5X5 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under T42.5X5.

What chapter is T42.5X5 in?

T42.5X5 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).

What codes cannot be used with T42.5X5?

T42.5X5 has Excludes1 notes indicating codes that cannot be used together with it, including: birth trauma (P10-P15); obstetric trauma (O70-O71); toxic reaction to local anesthesia in pregnancy (O29.3-).

What are the subcategories under T42.5X5?

T42.5X5 has 3 child codes, including: T42.5X5A (Adverse effect of mixed antiepileptics, initial encounter), T42.5X5D (Adverse effect of mixed antiepileptics, subsequent encounter), T42.5X5S (Adverse effect of mixed antiepileptics, sequela).

Are additional codes required with T42.5X5?

Yes, when using T42.5X5 you should also code: code to identify any retained foreign body, if applicable (Z18.-); code(s) to specify:; manifestations of poisoning; underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9); underdosing of medication regimen (Z91.12-, Z91.13-).

What are the UMLS CUIs for T42.5X5?

T42.5X5 is linked to 1 UMLS Concept Unique Identifier: C2878184. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

Automate ICD-10 Coding With AI

Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.

Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.