2024 ICD-10-CM Diagnosis Code T43.594A
Poisoning by other antipsychotics and neuroleptics, undetermined, initial encounter
- ICD-10-CM Code:
- T43.594A
- ICD-10 Code for:
- Poisoning by oth antipsychot/neurolept, undetermined, init
- Is Billable?
- Yes - Valid for Submission
- Chronic Condition Indicator: [1]
- Not chronic
- Code Navigator:
T43.594A is a billable diagnosis code used to specify a medical diagnosis of poisoning by other antipsychotics and neuroleptics, undetermined, 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.
T43.594A 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 antipsychotics and neuroleptics 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.
Clinical Classification
Clinical Category | CCSR Category Code | Inpatient Default CCSR | Outpatient Default CCSR |
---|---|---|---|
External cause codes: intent of injury, undetermined | EXT023 | 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. |
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
Amisulpride
a benzamide derivative that is used as an antipsychotic agent for the treatment of schizophrenia. it is also used as an antidepressive agent.Buspirone
an anxiolytic agent and serotonin receptor agonist belonging to the azaspirodecanedione class of compounds. its structure is unrelated to those of the benzodiazapines, but it has an efficacy comparable to diazepam.Droperidol
a butyrophenone with general properties similar to those of haloperidol. it is used in conjunction with an opioid analgesic such as fentanyl to maintain the patient in a calm state of neuroleptanalgesia with indifference to surroundings but still able to cooperate with the surgeon. it is also used as a premedicant, as an antiemetic, and for the control of agitation in acute psychoses. (from martindale, the extra pharmacopoeia, 29th ed, p593)Fluspirilene
a long-acting injectable antipsychotic agent used for chronic schizophrenia.Hydroxyzine
a histamine h1 receptor antagonist that is effective in the treatment of chronic urticaria, dermatitis, and histamine-mediated pruritus. unlike its major metabolite cetirizine, it does cause drowsiness. it is also effective as an antiemetic, for relief of anxiety and tension, and as a sedative.Loxapine
an antipsychotic agent used in schizophrenia.Meprobamate
a carbamate with hypnotic, sedative, and some muscle relaxant properties, although in therapeutic doses reduction of anxiety rather than a direct effect may be responsible for muscle relaxation. meprobamate has been reported to have anticonvulsant actions against petit mal seizures, but not against grand mal seizures (which may be exacerbated). it is used in the treatment of anxiety disorders, and also for the short-term management of insomnia but has largely been superseded by the benzodiazepines. (from martindale, the extra pharmacopoeia, 30th ed, p603)Molindone
an indole derivative effective in schizophrenia and other psychoses and possibly useful in the treatment of the aggressive type of undersocialized conduct disorder. molindone has much lower affinity for d2 receptors than most antipsychotic agents and has a relatively low affinity for d1 receptors. it has only low to moderate affinity for cholinergic and alpha-adrenergic receptors. some electrophysiologic data from animals indicate that molindone has certain characteristics that resemble those of clozapine. (from ama drug evaluations annual, 1994, p283)Olanzapine
a benzodiazepine derivative that binds serotonin receptors; muscarinic receptors; histamine h1 receptors; adrenergic alpha-1 receptors; and dopamine receptors. it is an antipsychotic agent used in the treatment of schizophrenia; bipolar disorder; and major depressive disorder; it may also reduce nausea and vomiting in patients undergoing chemotherapy.Penfluridol
one of the long-acting antipsychotic agents used for maintenance or long-term therapy of schizophrenia and other psychotic disorders.Pimozide
a diphenylbutylpiperidine that is effective as an antipsychotic agent and as an alternative to haloperidol for the suppression of vocal and motor tics in patients with tourette syndrome. although the precise mechanism of action is unknown, blockade of postsynaptic dopamine receptors has been postulated. (from ama drug evaluations annual, 1994, p403)Raclopride
a substituted benzamide that has antipsychotic properties. it is a dopamine d2 receptor (see receptors, dopamine d2) antagonist.Remoxipride
an antipsychotic agent that is specific for dopamine d2 receptors. it has been shown to be effective in the treatment of schizophrenia.Sulpiride
a dopamine d2-receptor antagonist. it has been used therapeutically as an antidepressant, antipsychotic, and as a digestive aid. (from merck index, 11th ed)Tetrabenazine
a drug formerly used as an antipsychotic and treatment of various movement disorders. tetrabenazine blocks neurotransmitter uptake into adrenergic storage vesicles and has been used as a high affinity label for the vesicle transport system.
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 psychotropic drugs, not elsewhere classified (T43). Use the following options for the aplicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Convert T43.594A to ICD-9-CM
- ICD-9-CM Code: 969.3 - Poison-antipsychotic NEC
Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment. - ICD-9-CM Code: E980.3 - Undeterm pois-psychotrop
Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.
Table of Drugs and Chemicals
The parent code T43.594 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.
Patient Education
Poisoning
A poison is any substance that is harmful to your body. You might swallow it, inhale it, inject it, or absorb it through your skin. Any substance can be poisonous if too much is taken. Poisons can include:
- Prescription or over-the-counter medicines taken in doses that are too high
- Overdoses of illegal drugs
- Carbon monoxide from gas appliances
- Household products, such as laundry powder or furniture polish
- Pesticides
- Indoor or outdoor plants
- Metals such as lead and mercury
The effects of poisoning range from short-term illness to brain damage, coma, and death. To prevent poisoning it is important to use and store products exactly as their labels say. Keep dangerous products where children can't get to them. Treatment for poisoning depends on the type of poison. If you suspect someone has been poisoned, call your local poison control center at 1-800-222-1222 right away.
[Learn More in MedlinePlus]
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
- FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
- FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
- FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
- FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
- FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.
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.