Valid for Submission
T40.604A is a billable diagnosis code used to specify a medical diagnosis of poisoning by unspecified narcotics, undetermined, initial encounter. The code T40.604A is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
The ICD-10-CM code T40.604A 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.
T40.604A is an initial encounter code, includes a 7th character and should be used while the patient is receiving active treatment for a condition like poisoning by unspecified narcotics undetermined. According to ICD-10-CM Guidelines an "initial encounter" doesn't necessarily means "initial visit". The 7th character should be used when the patient is undergoing active treatment regardless if new or different providers saw the patient over the course of a treatment. The appropriate 7th character codes should also be used even if the patient delayed seeking treatment for a condition.
Unspecified diagnosis codes like T40.604A 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.
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