ICD-10-CM S66.999: Other injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand

Parent Code (Less Specific):

About ICD-10-CM Code S66.999 (Other injury of unspecified muscle)

ICD-10-CM code S66.999 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 S66.999 became effective on October 1, 2024.

This page provides detailed information about S66.999 - Other injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand. 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 Other injury of unspecified muscle related to fascia and tendon at wrist and hand level, unspecified hand.