T52.81: Toxic effects of alkenes

New code · FY2027

Not billable: this is a header. Use one of the more specific codes below.

• New code, effective October 1, 2026 (FY2027).

Code breakdown

Coding notes

Excludes1 (from T52)

• halogen derivatives of aliphatic and aromatic hydrocarbons (T53.-)

7th character (from T52)

• The appropriate 7th character is to be added to each code from category T52

7th characters (category T52)

• A initial encounter
• D subsequent encounter
• S sequela

Codes under T52.81

• T52.811 Toxic effect of alkenes, accidental (unintentional)
• T52.812 Toxic effect of alkenes, intentional self-harm
• T52.813 Toxic effect of alkenes, assault
• T52.814 Toxic effect of alkenes, undetermined

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All FY2027 ICD-10-CM changes

ICD-10-CM codes and descriptions are from the CMS and NCHS code files. Coverage is from the CMS Medicare Coverage Database billing and coding articles.