Specialty Billing Reference Guide
Coding rules, prior authorization requirements, bundling edits, and documentation standards organized by medical specialty. Each page covers the CPT codes, modifiers, and payer-specific rules your billing team needs.
Behavioral Health
CPT 90837: Psychotherapy 60 Minutes
CPT 90834: Psychotherapy 45 Minutes
CPT 90832: Psychotherapy 30 Minutes
CBT Billing Guide
Telehealth Mental Health Billing
ADHD Diagnosis and Billing
BH Claim Denials and Appeals
Psychiatric Medication Management
Substance Abuse Treatment Billing
Intensive Outpatient Program Billing
Depression Treatment Coding
Anxiety Disorder Coding
DBT Billing Guide
Psychological Testing Billing
PTSD Treatment Billing
Partial Hospitalization Program Billing
Orthopedics
Cardiology
Echocardiogram Billing
Cardiac Catheterization Billing
EKG Billing
Cardiac Stress Test Billing
Cardiac Rehabilitation Billing
Dermatology
Primary Care
E/M Level 1-5 Billing Guide
Office Visit E/M Coding
Preventive Care Visit Billing
Chronic Care Management Billing
Behavioral Health Integration Billing
Telehealth
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Coding rules follow CPT guidelines. Payer policies vary. Always verify against current payer documentation and CMS rules. Last updated: 2026-03-30.