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Exam Comparison

CPC vs RDN

Comparing the AAPC Certified Professional Coder (CPC) and the CDR Registered Dietitian Nutritionist Exam (RDN). Both fall under Allied Health & Medicine. Both are covered by the Allied Health Exam Prep app.

CPC Overview → RDN Overview →

CPC vs RDN: At a Glance

Detail CPC RDN
Full Name AAPC Certified Professional Coder (CPC) CDR Registered Dietitian Nutritionist Exam (RDN)
Governing Body AAPC CDR
Number of Questions
Time Limit
Passing Score
Exam Fee
Category Allied Health & Medicine Allied Health & Medicine
C3RT App Allied Health Exam Prep Soon Allied Health Exam Prep Soon

Content Areas Compared

CPC Domains

  • Medical Terminology, Anatomy and Physiology
  • ICD-10-CM Diagnosis Coding
  • CPT Evaluation and Management Coding
  • CPT Surgical Coding by Body System
  • CPT Medicine, Radiology and Pathology
  • HCPCS Level II
  • Compliance and Regulatory Guidelines

RDN Domains

  • Principles of Dietetics(12%)
  • Nutrition Care for Individuals and Groups(50%)
  • Management of Food and Nutrition Programs and Services(21%)
  • Support of Research(17%)

Frequently Asked Questions

What is the difference between CPC and RDN?

The CPC (AAPC Certified Professional Coder (CPC)) is administered by AAPC. The RDN (CDR Registered Dietitian Nutritionist Exam (RDN)) is administered by CDR. Both are Allied Health & Medicine credentials.

Can I take both the CPC and the RDN?

Yes, the CPC and RDN are separate credentials with separate eligibility requirements. Each is awarded by a different governing body (AAPC and CDR respectively). Check the official requirements for each before registering.

Which should I take first, CPC or RDN?

The right sequence depends on your career goals and current credentials. The CPC is offered by AAPC, while the RDN is offered by CDR. Review the eligibility requirements for each with the respective governing bodies before deciding.

Does C3RT cover both the CPC and the RDN?

C3RT is building apps for both the CPC and the RDN. Both will be available on iOS and Mac.

The AAPC Certified Professional Coder (CPC) (CPC) is administered by AAPC. The CDR Registered Dietitian Nutritionist Exam (RDN) (RDN) is administered by CDR. C3RT is not affiliated with either organisation. Certification names and trademarks are the property of their respective owners.