T43.656
⚠ Non-billable
Underdosing of methamphetamines
ICD-10-CM · FY2026 · Injury, Poisoning and Certain Other Consequences of External Causes
Code
T43.656
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Injury, Poisoning and Certain Other Consequences of External Causes
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code T43.656?
ICD-10-CM code T43.656 represents Underdosing of methamphetamines. It is a non-billable header code requiring a more specific subcategory in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective October 1, 2025 – September 30, 2026.
Is T43.656 billable?
No. T43.656 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is T43.656 in?
T43.656 belongs to the Injury, Poisoning and Certain Other Consequences of External Causes chapter (S00–T88) of ICD-10-CM.
Related codes in the T43 category
T43
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T43.0
Poisoning by, adverse effect of and underdosing of tricyclic and tetracyclic antidepressants
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T43.1
Poisoning by, adverse effect of and underdosing of monoamine-oxidase-inhibitor antidepressants
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T43.2
Poisoning by, adverse effect of and underdosing of other and unspecified antidepressants
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T43.3
Poisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neuroleptics
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T43.4
Poisoning by, adverse effect of and underdosing of butyrophenone and thiothixene neuroleptics
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T43.5
Poisoning by, adverse effect of and underdosing of other and unspecified antipsychotics and neuroleptics
Non-billable
T43.6
Poisoning by, adverse effect of and underdosing of psychostimulants
Non-billable
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