2024 ICD-10-CM Diagnosis Code T40.491
Poisoning by other synthetic narcotics, accidental (unintentional)
- ICD-10-CM Code:
- T40.491
- ICD-10 Code for:
- Poisoning by other synthetic narcotics, accidental
- Is Billable?
- Not Valid for Submission
- Code Navigator:
T40.491 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of poisoning by other synthetic narcotics, accidental (unintentional). The code is not specific and is NOT valid for the year 2024 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.
Specific Coding Applicable to Poisoning by other synthetic narcotics, accidental
Non-specific codes like T40.491 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for poisoning by other synthetic narcotics, accidental:
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Accidental acetaminophen and/or dextropropoxyphene overdose
- Accidental acetaminophen and/or dextropropoxyphene overdose
- Accidental acetaminophen and/or dextropropoxyphene poisoning
- Accidental acetaminophen and/or dextropropoxyphene poisoning
- Accidental acetaminophen and/or dextropropoxyphene poisoning
- Accidental buprenorphine overdose
- Accidental buprenorphine poisoning
- Accidental dextromoramide overdose
- Accidental dextromoramide poisoning
- Accidental dextropropoxyphene overdose
- Accidental dextropropoxyphene poisoning
- Accidental dipipanone overdose
- Accidental dipipanone poisoning
- Accidental levorphanol overdose
- Accidental levorphanol poisoning
- Accidental meperidine overdose
- Accidental nalbuphine overdose
- Accidental nalbuphine poisoning
- Accidental pentazocine overdose
- Accidental phenazocine overdose
- Accidental phenazocine poisoning
- Accidental phenoperidine overdose
- Accidental phenoperidine poisoning
- Accidental poisoning by pentazocine
- Accidental poisoning by pethidine
- Acetaminophen and/or dextropropoxyphene overdose
- Acetaminophen and/or dextropropoxyphene overdose
- Acetaminophen and/or dextropropoxyphene overdose
- Acetaminophen and/or dextropropoxyphene poisoning
- Buprenorphine overdose
- Buprenorphine poisoning
- Dextromoramide overdose
- Dextromoramide poisoning
- Dextropropoxyphene overdose
- Dextropropoxyphene poisoning
- Dipipanone overdose
- Dipipanone poisoning
- Levorphanol overdose
- Levorphanol poisoning
- Meperidine analog overdose
- Meperidine analog poisoning
- Meperidine overdose
- Methadone analog overdose
- Methadone analog overdose
- Methadone analog overdose
- Methadone analog overdose
- Methadone analog overdose
- Methadone analog overdose
- Morphinan opioid overdose
- Morphinan opioid overdose
- Morphinan opioid overdose
- Morphinan opioid overdose
- Nalbuphine overdose
- Nalbuphine poisoning
- Pentazocine overdose
- Phenazocine overdose
- Phenazocine poisoning
- Phenoperidine overdose
- Phenoperidine poisoning
- Poisoning by meperidine
- Poisoning by pentazocine
Clinical Information
Alphaprodine
an opioid analgesic chemically related to and with an action resembling that of meperidine, but more rapid in onset and of shorter duration. it has been used in obstetrics, as pre-operative medication, for minor surgical procedures, and for dental procedures. (from martindale, the extra pharmacopoeia, 30th ed, p1067)Buprenorphine
a derivative of the opioid alkaloid thebaine that is a more potent and longer lasting analgesic than morphine. it appears to act as a partial agonist at mu and kappa opioid receptors and as an antagonist at delta receptors. the lack of delta-agonist activity has been suggested to account for the observation that buprenorphine tolerance may not develop with chronic use.Buprenorphine, Naloxone Drug Combination
a pharmaceutical preparation that combines buprenorphine, an opioid analgesics with naloxone, a narcotic antagonists to reduce the potential for narcotic dependence in the treatment of pain. it may also be used for opioid substitution therapy.Butorphanol
a synthetic morphinan analgesic with narcotic antagonist action. it is used in the management of severe pain.Dextromoramide
an opioid analgesic structurally related to methadone and used in the treatment of severe pain. (from martindale, the extra pharmacopoeia, 30th ed, p1070)Dextropropoxyphene
a narcotic analgesic structurally related to methadone. only the dextro-isomer has an analgesic effect; the levo-isomer appears to exert an antitussive effect.Levopropoxyphene
a propionate derivative that is used to suppress coughing.Levorphanol
a narcotic analgesic that may be habit-forming. it is nearly as effective orally as by injection.Meperidine
a narcotic analgesic that can be used for the relief of most types of moderate to severe pain, including postoperative pain and the pain of labor. prolonged use may lead to dependence of the morphine type; withdrawal symptoms appear more rapidly than with morphine and are of shorter duration.Nalbuphine
a narcotic used as a pain medication. it appears to be an agonist at kappa receptors and an antagonist or partial agonist at mu receptors.Pentazocine
the first mixed agonist-antagonist analgesic to be marketed. it is an agonist at the kappa and sigma opioid receptors and has a weak antagonist action at the mu receptor. (from ama drug evaluations annual, 1991, p97)Phenazocine
an opioid analgesic with actions and uses similar to morphine. (from martindale, the extra pharmacopoeia, 30th ed, p1095)Phenoperidine
a narcotic analgesic partly metabolized to meperidine in the liver. it is similar to morphine in action and used for neuroleptanalgesia, usually with droperidol.Tilidine
an opioid analgesic used similarly to morphine in the control of moderate to severe pain. (from martindale, the extra pharmacopoeia, 30th ed, p1097)
Coding Guidelines
When coding a poisoning or reaction to the improper use of a medication (e.g., overdose, wrong substance given or taken in error, wrong route of administration), first assign the appropriate code from categories T36-T50. The poisoning codes have an associated intent as their 5th or 6th character (accidental, intentional self-harm, assault and undetermined. If the intent of the poisoning is unknown or unspecified, code the intent as accidental intent. The undetermined intent is only for use if the documentation in the record specifies that the intent cannot be determined. Use additional code(s) for all manifestations of poisonings.
The appropriate 7th character is to be added to each code from block Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens] (T40). Use the following options for the aplicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Tabular List of Diseases and Injuries
The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.
Inclusion Terms
Inclusion TermsThese terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Poisoning by other synthetic narcotics NOS
Table of Drugs and Chemicals
The code is referenced 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-CM 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.
Code History
- FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
- FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
- FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
- FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021