ICD-10-CM S21.9: Open wound of unspecified part of thorax

ICD-10-CM Diagnosis Code (2025)

Official Description for S21.9

Open wound of unspecified part of thorax

Coding Notes & Guidelines for S21.9

Excludes1: Not Coded Here

superficial bite of thorax (S20.97)

Inclusion Terms

Open wound of thoracic wall NOS

Parent Code (Less Specific):

About ICD-10-CM Code S21.9 (Open wound of unspecified part of thorax)

ICD-10-CM code S21.9 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 S21.9 became effective on October 1, 2024.

This page provides detailed information about S21.9 - Open wound of unspecified part of thorax. 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 Open wound of unspecified part of thorax.