AAPC certification
How to Become a Certified Outpatient Coder (COC) in 2026
To become a Certified Outpatient Coder (COC) you pass the COC exam set by AAPC. Outpatient facility coding, aimed at hospital outpatient departments and ambulatory surgery centers.
On cost, exam vouchers start at $425, and AAPC's prep course starts at $2,195.
There is no licence and no state board in medical coding, so the credential is the qualification. What follows is what the COC covers, what it costs in total, who can sit it, what keeps it current, and when it is the right one to choose over CPC or CIC.
Exam
exam vouchers start at $425
Awarded by
AAPC
Renewal
active AAPC membership plus 36 continuing education units every two years
What is the COC certification?
The COC, or Certified Outpatient Coder, is a certification awarded by AAPC that validates expertise in coding outpatient hospital and facility services, including same-day surgeries, emergency department visits and hospital outpatient clinics. In practice it is the facility-side counterpart to the CPC, for people whose employer is a hospital outpatient department rather than a practice.
AAPC points the COC at three groups in particular:
- Coders starting out who want hospital outpatient work specifically
- Certified coders moving from physician practice into facility coding
- People heading toward outpatient auditing or compliance
What does the COC exam cover?
The COC exam covers 5 areas, as AAPC describes them:
- ICD-10-CM diagnosis coding in the outpatient setting
- CPT and HCPCS Level II codes for outpatient procedures and supplies
- Ambulatory Payment Classification and outpatient reimbursement methodology
- Same-day surgery, endoscopy, emergency department and observation coding
- Revenue codes, NCCI edits and denial prevention
What that means in practice: the outpatient facility rules are what separate this from the CPC. Ambulatory Payment Classification, revenue codes and observation status do not appear in physician-practice coding at all, and they are why a hospital outpatient department asks for the COC rather than accepting the CPC.
How much does the COC exam cost?
The COC exam costs exam vouchers start at $425, and AAPC's prep course starts at $2,195. Nothing else is included in that figure: expect to buy the current code books, and to pay tuition separately if you take a programme.
The COC is taken online at home with a live remote proctor, or at a testing centre.
Compare that with tuition before deciding it is expensive. Programmes we rank charge between about $1,100 and $10,100 a year, so the exam fee is a small share of what you will actually spend getting to it. See the ranked programmes.
Who can sit the COC exam?
Anyone meeting AAPC's stated conditions can sit the COC. AAPC expects candidates to bring high-level knowledge of medical terminology, anatomy and pathophysiology, along with the proper application of CPT, HCPCS Level II and ICD-10-CM codes.
Meeting it is not the same as being ready for it. AAPC is describing who may register, not who tends to pass, and the gap between those two is where most failed first attempts sit. A programme built specifically around the COC is worth more than one that merely leaves you eligible for it, which is why our ranked programmes record the exam each one names.
How do you keep the COC?
Keeping the COC takes an active AAPC membership plus 36 continuing education units every two years. This is the part people miss when they compare exam fees, because a credential carries a running cost as well as a purchase price.
What sets the COC apart
- The only AAPC coding credential built specifically around the hospital outpatient department rather than the physician office
- Covers Ambulatory Payment Classification, which the CPC does not touch
How does the COC compare with other coding certifications?
The COC compares most directly with CPC and CIC, and the choice between them follows the employer rather than the credential. The COC is the facility-side counterpart to the CPC, for people whose employer is a hospital outpatient department rather than a practice.
| Credential | Body | Where it fits |
|---|---|---|
| CPC | AAPC | the default first credential for physician-practice and outpatient work, and the foundation the other AAPC credentials build on |
| CIC | AAPC | AAPC's answer to the inpatient hospital market, where AHIMA's CCS has the longer history |
| CRC | AAPC | the specialism to take after a core credential, and the one most tied to how Medicare Advantage actually pays |
| CCA | AHIMA | AHIMA's entry credential, and the usual first exam for a graduate of a PCAP-approved certificate |
| CCS | AHIMA | the inpatient hospital standard, and the credential most worth working toward if acute care is the goal |
What jobs and pay does the COC lead to?
The COC leads to medical coder roles. Federal data files that work as Medical Records Specialists, SOC 29-2072, with a median of $51,140 , with the bottom tenth at $37,000 and the top tenth at $81,150, per the U.S. Bureau of Labor Statistics for May 2025. No credential guarantees a wage, and the tenth percentile is closer to what a first job pays than the median is.
Common questions about the COC
How much does the COC exam cost?
Who is eligible to sit the COC exam?
How do you keep the COC once you have it?
Is the COC worth it?
Sources
- AAPC's own COC certification page, read 2026-08-18. Every fee, coverage and renewal detail on this page comes from it.
- U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025. Where the pay range quoted above comes from.
- Which programmes prepare you for the COC: our ranked list and what accreditation actually means.
We re-read these pages periodically, but AAPC can change a fee or a CEU count at any time. Check before paying.