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T49.9

Non-billable

Unsp topical agent

Poisoning by, adverse effect of and underdosing of unspecified topical agent

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

T49

Child Codes

6

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
  • poisoning by, adverse effect of and underdosing of glucocorticoids, topically used

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)

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 (6)

T49.91

Poisoning by unsp topical agent, accidental (unintentional)

T49.92

Poisoning by unsp topical agent, intentional self-harm

T49.93

Poisoning by unspecified topical agent, assault

T49.94

Poisoning by unspecified topical agent, undetermined

T49.95

Adverse effect of unspecified topical agent

T49.96

Underdosing of unspecified topical agent

Also Known As / Clinical Terms

UMLS

Frequently Asked Questions

What is ICD-10 code T49.9?

ICD-10-CM code T49.9 represents "Poisoning by, adverse effect of and underdosing of unspecified topical agent". It is a non-billable header code — use a more specific child code for billing purposes.

Is T49.9 a billable code?

No, T49.9 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 6 child codes under T49.9.

What chapter is T49.9 in?

T49.9 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).

What codes cannot be used with T49.9?

T49.9 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 T49.9?

T49.9 has 6 child codes, including: T49.91 (Poisoning by unsp topical agent, accidental (unintentional)), T49.92 (Poisoning by unsp topical agent, intentional self-harm), T49.93 (Poisoning by unspecified topical agent, assault), T49.94 (Poisoning by unspecified topical agent, undetermined), and 2 more.

Are additional codes required with T49.9?

Yes, when using T49.9 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 T49.9?

T49.9 is linked to 1 UMLS Concept Unique Identifier: C2883501. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

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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.