Not Valid for Submission
T40.604 is a "header" nonspecific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of poisoning by unspecified narcotics, undetermined. The code is NOT valid for the year 2021 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.
The ICD-10-CM code T40.604 might also be used to specify conditions or terms like narcotic poisoning of undetermined intent, overdose of opiate or poisoning by opiate and/or related narcotic.
Unspecified diagnosis codes like T40.604 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 for Poisoning by unspecified narcotics, undetermined
Header codes like T40.604 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for poisoning by unspecified narcotics, undetermined:
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Narcotic poisoning of undetermined intent
- Overdose of opiate
- Poisoning by opiate AND/OR related narcotic
Table of Drugs and Chemicals
The code T40.604 is included in the Table of Drugs and Chemicals, this table contains a classification of drugs, industrial solvents, corrosive gases, noxious plants, pesticides, and other toxic agents. According to ICD-10 coding guidelines it is advised to do not code directly from the Table of Drugs and Chemicals, instead always refer back to the Tabular List when doing the initial coding. Each substance in the table is assigned a code according to the poisoning classification and external causes of adverse effects. It is important to use as many codes as necessary to specify all reported drugs, medicinal or chemical substances. If the same diagnosis code describes the causative agent for more than one adverse reaction, poisoning, toxic effect or underdosing, utilize the code only once.