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3. Chapter - S00-T88
4. Section - T51-T65
5. Category - T65
6. T65.9

T65.9 - Toxic effect of unspecified substance

• Applicable to Toxic effect of unspecified substance
• The 2025 edition of ICD10-CM T65.9 became effective on October 1, 2024.
• This is the American ICD10-CM version of T65.9 - other international versions of ICD10 T65.9 may differ.
• T65.9 is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• T65.9 Code should not be used for billing or reimbursement purposes as there are multiple ICD-10 CM codes below it that contain a greater level of detail.

The following codes above T65.9 contain annotation back-references that may be applicable to T65.9:

• Chapter: S00-T88 - Injury, poisoning and certain other consequences of external causes
• Section: T51-T65 - Toxic effects of substances chiefly nonmedicinal as to source
• Category: T65 - Toxic effect of other and unspecified substances

Browse other similar CM codes:

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.