The two major coding organizations each have three main coding exams. Both have an exam for inpatient facility coding, outpatient coding, and provider coding. These are the core generalist exams most employers want.
While some of these exams have recommendations, none of them have prerequisites. Any adult can take any of the below exams with no prior experience or education. This does not mean they are easy. These exams are very difficult and cover a huge range of topics. All the same, it is very possible to self-study and and pass. Many people have (I did) and many more will. Just remember that studying is the key.
Each exam has a syllabus/content guide available on the relevant website. There is also information on registration, preparation, membership, and examination procedures. Please read ALL the information minutely! Remember that any information can be updated - so go back periodically to insure you are not surprised.
Below is a list of the exams separated by organization. Each exam lists the required books and the links to the topics covered. These are current for 2024.
Ahima exams
CCA: https://www.ahima.org/certification-careers/certification-exams/cca/
ICD-10-PCS, ICD-10-CM,CPT®
CCS: https://www.ahima.org/certification-careers/certification-exams/ccs/
ICD-10-PCS, ICD-10-CM,CPT®
CCS-P: https://www.ahima.org/certification-careers/certification-exams/ccs-p/
CPT®, ICD-10-CM, and HCPCS Level II
AAPC EXAMS
(The test breakdowns are at the bottom of the linked pages)
CPC: https://www.aapc.com/certifications/cpc/taking-the-cpc-exam
CPT®, ICD-10-CM, and HCPCS Level II
CIC: https://www.aapc.com/certifications/cic
ICD-10-PCS and ICD-10-CM
COC: https://www.aapc.com/certifications/coc
CPT®, ICD-10-CM, and HCPCS Level II