ICD10BillableValid for clinical use

ICD-10 Code T59.2X3: Toxic effect of formaldehyde, assault

T59.2X3 is a billable ICD-10 diagnosis code used to classify Toxic effect of formaldehyde, assault in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Injury, poisoning and certain other consequences of external causes (S00-T88).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Injury, poisoning and certain other consequences of external causes (S00-T88).

When is it used?

  • May be used when a clinician documents toxic effect of formaldehyde, assault in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
19Injury, poisoning and certain other consequences of external causes (S00-T88)
block
T07-T88Injury, poisoning and certain other consequences of external causes
block
T51-T65Toxic effects of substances chiefly nonmedicinal as to source
category
T59Toxic effect of other gases, fumes and vapors
category
T59.2Toxic effect of formaldehyde
category
T59.2XToxic effect of formaldehyde
currentT59.2X

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

Emergency Medicine SpecialistOrthopedic Specialist

Coding guidelines

Common synonyms

Toxic effect of formaldehyde, assault

Frequently asked questions

Code details

CodeT59.2X3
SystemICD10
Display nameToxic effect of formaldehyde, assault
ChapterInjury, poisoning and certain other consequences of external causes (S00-T88)
BlockToxic effects of substances chiefly nonmedicinal as to source

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code T59.2X3 for Toxic effect of formaldehyde, assault | HealthAssure