Block in Chapter 19

T51–T65

Toxic effects of substances chiefly nonmedicinal as to source

Use additional code

Add the listed code as a secondary code, if known.

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

Also from chapter/block level (1 note)

Inherited from Chapter 19 Injury, poisoning and certain other consequences of external causes

Not coded here. The listed conditions generally should not be reported together.

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Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (2 notes)

Inherited from Chapter 19 Injury, poisoning and certain other consequences of external causes

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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.

Also from chapter/block level (2 notes)

Inherited from Chapter 19 Injury, poisoning and certain other consequences of external causes

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
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.