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  6. 2024 ICD-10-CM Code T53.9

2024 ICD-10-CM Diagnosis Code T53.9

Toxic effects of unspecified halogen derivatives of aliphatic and aromatic hydrocarbons

ICD-10-CM Code:
T53.9
ICD-10 Code for:
Toxic effects of unsp halogen derivatives of aromat hydrocrb
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Toxic effects of substances chiefly nonmedicinal as to source
      (T51-T65)
      • Toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons
        (T53)

T53.9 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of toxic effects of unspecified halogen derivatives of aliphatic and aromatic hydrocarbons. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Unspecified diagnosis codes like T53.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

Specific Coding Applicable to Toxic effects of unsp halogen derivatives of aromat hydrocrb

Non-specific codes like T53.9 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for toxic effects of unsp halogen derivatives of aromat hydrocrb:

  • T53.91 for Toxic effect of unspecified halogen derivatives of aliphatic and aromatic hydrocarbons, accidental (unintentional) - NON-BILLABLE CODE

  • Use T53.91XA for initial encounter - BILLABLE CODE

  • Use T53.91XD for subsequent encounter - BILLABLE CODE

  • Use T53.91XS for sequela - BILLABLE CODE

  • T53.92 for Toxic effect of unspecified halogen derivatives of aliphatic and aromatic hydrocarbons, intentional self-harm - NON-BILLABLE CODE

  • Use T53.92XA for initial encounter - BILLABLE CODE

  • Use T53.92XD for subsequent encounter - BILLABLE CODE

  • Use T53.92XS for sequela - BILLABLE CODE

  • T53.93 for Toxic effect of unspecified halogen derivatives of aliphatic and aromatic hydrocarbons, assault - NON-BILLABLE CODE

  • Use T53.93XA for initial encounter - BILLABLE CODE

  • Use T53.93XD for subsequent encounter - BILLABLE CODE

  • Use T53.93XS for sequela - BILLABLE CODE

  • T53.94 for Toxic effect of unspecified halogen derivatives of aliphatic and aromatic hydrocarbons, undetermined - NON-BILLABLE CODE

  • Use T53.94XA for initial encounter - BILLABLE CODE

  • Use T53.94XD for subsequent encounter - BILLABLE CODE

  • Use T53.94XS for sequela - BILLABLE CODE

Coding Guidelines

When a harmful substance is ingested or comes in contact with a person, this is classified as a toxic effect. Toxic effect codes have an associated intent: accidental, intentional self-harm, assault and undetermined.

The appropriate 7th character is to be added to each code from block Toxic effect of halogen derivatives of aliphatic and aromatic hydrocarbons (T53). Use the following options for the aplicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.