ICD-10 & CPT Code Directory for US Medical Specialties
Specialty-specific billing codes, tips, and FAQs for physicians, coders, and billing teams. Search any symptom, diagnosis, or code to find the right specialty page.Updated September 2026
OmniMD builds EHR, billing, and practice management for all 28 specialties, with ICD-10 and CPT code suggestions built directly into the clinical workflow.
Quick single-answer pages for the most frequently searched symptom-to-code lookups — useful when you know the complaint but not yet which specialty it will end up under.
What is the difference between ICD-10 and CPT codes?
ICD-10-CM codes describe the diagnosis — the condition, symptom, or reason for the visit. CPT codes describe the procedure or service performed. A complete claim generally pairs at least one ICD-10-CM code with the CPT code(s) for that encounter.
How often are ICD-10-CM and CPT codes updated?
ICD-10-CM updates take effect every October 1 (the CMS/CDC fiscal year), and CPT changes take effect every January 1 from the AMA. This directory reflects FY 2026 ICD-10-CM codes (current, effective Oct 1, 2025), CPT 2026 codes, and select FY 2027 ICD-10-CM additions (effective Oct 1, 2026) noted on individual specialty pages.
Are the codes on this page billable as-is?
Most listed codes are billable, but always confirm code specificity, documentation requirements, and payer-specific coverage policies before submitting a claim — some diagnoses require additional digits or modifiers.
How many codes does this directory cover in total?
The directory spans 28 specialties with 1,200+ ICD-10-CM codes and 500+ CPT codes. Each specialty page lists its top codes in full, along with common denial reasons and billing tips.
What if I can’t find my specialty or code?
Use the search box above — it matches by specialty name, symptom, diagnosis, or code number across all 28 specialties. If your exact code isn’t listed, the closest specialty page (e.g., Primary Care or Internal Medicine) is a good starting point.
✨ Wait — Don't Go!
See OmniMD in Action
Get a personalized 30-min demo — see exactly how OmniMD fits your practice.
