2024 ICD-10-CM Diagnosis Code T43.656
Underdosing of methamphetamines
- ICD-10-CM Code:
- T43.656
- ICD-10 Code for:
- Underdosing of methamphetamines
- Is Billable?
- Not Valid for Submission
- Code Navigator:
T43.656 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of underdosing of methamphetamines. 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 Underdosing of methamphetamines
Non-specific codes like T43.656 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 underdosing of methamphetamines:
Clinical Information
Methamphetamine
a central nervous system stimulant and sympathomimetic with actions and uses similar to dextroamphetamine. the smokable form is a drug of abuse and is referred to as crank, crystal, crystal meth, ice, and speed.
Coding Guidelines
Underdosing refers to taking less of a medication than is prescribed by a provider or a manufacturer's instruction. Codes for underdosing should never be assigned as principal or first-listed codes. If a patient has a relapse or exacerbation of the medical condition for which the drug is prescribed because of the reduction in dose, then the medical condition itself should be coded.
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
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.
Substance | Poisoning Accidental (unintentional) |
Poisoning Accidental (self-harm) |
Poisoning Assault |
Poisoning Undetermined |
Adverse effect |
Underdosing |
---|---|---|---|---|---|---|
Desoxyephedrine | T43.651 | T43.652 | T43.653 | T43.654 | T43.655 | T43.656 |
Metamfetamine | T43.651 | T43.652 | T43.653 | T43.654 | T43.655 | T43.656 |
Methamphetamine | T43.651 | T43.652 | T43.653 | T43.654 | T43.655 | T43.656 |
Methedrine | T43.651 | T43.652 | T43.653 | T43.654 | T43.655 | T43.656 |
Methylamphetamine | T43.651 | T43.652 | T43.653 | T43.654 | T43.655 | T43.656 |
Speed | T43.651 | T43.652 | T43.653 | T43.654 | T43.655 | T43.656 |
Code History
- FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
- FY 2023 - Code Added, effective from 10/1/2022 through 9/30/2023