2024 ICD-10-CM Diagnosis Code T40.493A
Poisoning by other synthetic narcotics, assault, initial encounter
- ICD-10-CM Code:
- T40.493A
- ICD-10 Code for:
- Poisoning by other synthetic narcotics, assault, init
- Is Billable?
- Yes - Valid for Submission
- Chronic Condition Indicator: [1]
- Not chronic
- Code Navigator:
T40.493A is a billable diagnosis code used to specify a medical diagnosis of poisoning by other synthetic narcotics, assault, initial encounter. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.
T40.493A 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 other synthetic narcotics assault. 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.
Clinical Classification
Clinical Category | CCSR Category Code | Inpatient Default CCSR | Outpatient Default CCSR |
---|---|---|---|
External cause codes: intent of injury, assault | EXT022 | N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis. | N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis. |
External cause codes: poisoning by drug | EXT014 | N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis. | N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis. |
Opioid-related disorders | MBD018 | N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis. | N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis. |
Poisoning by drugs, initial encounter | INJ022 | Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis. | Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis. |
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
Replacement Code
T40493A replaces the following previously assigned ICD-10-CM code(s):
- T40.4X3A - Poisoning by other synthetic narcotics, assault, init encntr
Table of Drugs and Chemicals
The parent code T40.493 of the current diagnosis 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 - Code Added, effective from 10/1/2020 through 9/30/2021
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.