ICD-10-CM G90.2: Horner's syndrome

ICD-10-CM Diagnosis Code (2025)

Official Description for G90.2

Horner's syndrome

Coding Notes & Guidelines for G90.2

Inclusion Terms
  • Bernard(-Horner) syndrome
  • Cervical sympathetic dystrophy or paralysis

Parent Code (Less Specific):

About ICD-10-CM Code G90.2 (Horner's syndrome)

ICD-10-CM code G90.2 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM G90.2 became effective on October 1, 2024.

This page provides detailed information about G90.2 - Horner's syndrome. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Horner's syndrome.