ICD-10/T26.5

T26.5 ICD 2026 Code: Corrosion of eyelid and periocular area

T26.5 is the authoritative medical code for Corrosion of eyelid and periocular area. This classification is used in medical billing and clinical recording to specify the clinical criteria for corrosion of eyelid and periocular area (ICD-10-CM T26.5), ensuring healthcare documentation aligns with 2026 federal coding standards.

Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.

Official Registry Overview & Definition

Corrosion of eyelid and periocular area is a non-billable ICD-10-CM category code T26.5. A more specific billable subcode must be selected for claims submission. Code first: T51-T65 to identify chemical and intent. Use additional code: external cause code to identify place Y92. 7th character: The appropriate 7th character is to be added to each code from category T26.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T26.5 in the official ICD-10-CM tabular list.

Code First

Underlying conditions that must be sequenced before this code.

  • T51-T65 to identify chemical and intent

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • external cause code to identify place Y92

Frequently Asked Questions (FAQ) & Clinical Guidance

Can T26.5 be billed directly?

No. T26.5 (Corrosion of eyelid and periocular area) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

Does T26.5 require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category T26.

Does T26.5 need to be sequenced after another code?

Yes. Code first: (T51-T65) to identify chemical and intent.

Is an additional code needed with T26.5?

Use additional code(s) to specify: external cause code to identify place (Y92).