ICD-10-CM Diagnosis Code S20.449A
Diagnosis Code: S20.449A (Raw: S20449A)
Description: External constriction of unspecified back wall of thorax, initial encounter
Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)
Fiscal Year: 2026
CMS Section 111 Status: Valid for reporting.
Overview & Clinical Details
ICD-10-CM code S20.449A is designated for External constriction of unspecified back wall of thorax, initial encounter. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.