T52.821

Toxic effect of cycloparaffins, accidental (unintentional)

Requires 7th characterNew in FY2027

T52.821 requires a 7th character to be reported. Choose a complete code below.

Inclusion terms

Applicable to

  • Toxic effects of cycloparaffins NOS

Includes (from T52)

  • Note: Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
  • Note: The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
  • Note: When no intent is indicated code to accidental. Undetermined intent is only for use when there is specific documentation in the record that the intent of the toxic effect cannot be determined.

Excludes1

Not coded here — never report together with this code.

  • contact with and (suspected) exposure to toxic substances (Z77.-) (from T52)
  • halogen derivatives of aliphatic and aromatic hydrocarbons (T53.-) (from T52)

Excludes2

Not included here — may be reported together when both conditions exist.

Use additional code

Add a code to identify the following, if applicable.

  • code to identify any retained foreign body, if applicable (Z18.-) (from T52)
  • code(s): (from T52)
  • for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70) (from T52)
  • personal history of foreign body fully removed (Z87.821) (from T52)
  • to identify any retained foreign body, if applicable (Z18.-) (from T52)

7th character

This code requires a 7th character (defined at T52). Use the placeholder "X" for missing positions.

CharacterMeaning
Ainitial encounter
Dsubsequent encounter
Ssequela

Also known as

  • Toxic effects of cycloparaffins NOS

Parent code

  • T52.82Toxic effects of cycloparaffinsNeeds 7th char

More specific codes T52.821

  • T52.821AToxic effect of cycloparaffins, accidental (unintentional), initial encounterBillable
  • T52.821DToxic effect of cycloparaffins, accidental (unintentional), subsequent encounterBillable
  • T52.821SToxic effect of cycloparaffins, accidental (unintentional), sequelaBillable

Related codes

  • T52.822Toxic effect of cycloparaffins, intentional self-harmNeeds 7th char
  • T52.823Toxic effect of cycloparaffins, assaultNeeds 7th char
  • T52.824Toxic effect of cycloparaffins, undeterminedNeeds 7th char

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