T59.824D: Toxic effect of hexamethylene diisocyanate, undetermined, subsequent encounter

New code · FY2027

Billable: use this code on claims.

• New code, effective October 1, 2026 (FY2027). Before that, this condition was coded as T59.894D.

Code breakdown

Coding notes

Includes (from T59)

• aerosol propellants

Excludes1 (from T59)

• chlorofluorocarbons (T53.5)

7th character (from T59)

• The appropriate 7th character is to be added to each code from category T59

7th characters (category T59)

• A initial encounter
• D subsequent encounter
• S sequela

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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.