Valid for Submission
T40.604S is a billable diagnosis code used to specify a medical diagnosis of poisoning by unspecified narcotics, undetermined, sequela. The code T40.604S 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 T40.604S 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. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.
T40.604S is a sequela code, includes a 7th character and should be used for complications that arise as a direct result of a condition like poisoning by unspecified narcotics undetermined. According to ICD-10-CM Guidelines a "sequela" code should be used for chronic or residual conditions that are complications of an initial acute disease, illness or injury. The most common sequela is pain. Usually, two diagnosis codes are needed when reporting sequela. The first code describes the nature of the sequela while the second code describes the sequela or late effect.
Unspecified diagnosis codes like T40.604S 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