ICD-10 Z73.3
ICD-10 Z73.3: Stress, not elsewhere classified
Category
Z-codes (psychosocial)
Code Type
Mental health diagnosis
Using ICD-10 Z73.3 on a Superbill
ICD-10 code Z73.3 (Stress, not elsewhere classified) is a z-codes (psychosocial) code used on superbills for mental health therapy billing. Insurance companies require at least one ICD-10 code per superbill to process a reimbursement claim.
CPT Codes Commonly Used With Z73.3
Common CPT codes paired with ICD-10 Z73.3 include 90837 (60-min psychotherapy), 90834 (45-min psychotherapy), and 90791 (initial psychiatric evaluation). The CPT code reflects the service rendered, not the diagnosis.