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Table 1 ICD-9-CM and ICD-10 codes used to identify potential cases of acetaminophen overdose

From: Validation of ICD-9-CM/ICD-10 coding algorithms for the identification of patients with acetaminophen overdose and hepatotoxicity using administrative data

Diagnostic Codes

Definition

ICD-9-CM

 

   965.4

Poisoning by aromatic analgesics including acetaminophen

   E850.4

Accidental poisoning by aromatic analgesics including acetaminophen

   E935.4

Adverse effects of therapeutic use of aromatic analgesics including acetaminophen

   E950.0 *

Suicide and self-inflicted poisoning by analgesics, antipyretics and antirheumatics

ICD-10

 

   T39.1

Poisoning by 4-aminophenol derivatives

   X40 *

Accidental poisoning by and exposure to nonopioid analgesics, antipyretics and antirheumatics including acetaminophen

   Y45.5

Adverse effects of therapeutic use of 4-aminophenol derivatives

   X60 *

Intentional self-poisoning by and exposure to nonopioid analgesics, antipyretics and antirheumatics including acetaminophen

   Y10 *

Poisoning by and exposure to nonopioid analgesics, antipyretics and antirheumatics, including acetaminophen, of undetermined intent

  1. Principal acetaminophen overdose codes.
  2. * Non-specific diagnostic codes.