Medical Coding Guides

ICD-10-CM vs CPT vs HCPCS Explained

A beginner-friendly guide to the major code sets used in medical coding coursework and practice exercises.

ICD-10-CM describes diagnoses

Work through this step with your assignment brief beside you. Note the exact requirement, identify what evidence or values you need, and avoid adding unsupported claims. If the task has a rubric, translate this step into a short checklist before drafting.

CPT describes procedures and services

Work through this step with your assignment brief beside you. Note the exact requirement, identify what evidence or values you need, and avoid adding unsupported claims. If the task has a rubric, translate this step into a short checklist before drafting.

HCPCS Level II adds supplies and non-physician services

Work through this step with your assignment brief beside you. Note the exact requirement, identify what evidence or values you need, and avoid adding unsupported claims. If the task has a rubric, translate this step into a short checklist before drafting.

Documentation must support every code

Work through this step with your assignment brief beside you. Note the exact requirement, identify what evidence or values you need, and avoid adding unsupported claims. If the task has a rubric, translate this step into a short checklist before drafting.

Ethics and official guidelines matter

Work through this step with your assignment brief beside you. Note the exact requirement, identify what evidence or values you need, and avoid adding unsupported claims. If the task has a rubric, translate this step into a short checklist before drafting.

Common mistakes

  • Starting before reading the rubric carefully.
  • Using generic examples that do not fit the field.
  • Forgetting to explain reasoning, assumptions, or citation choices.

FAQs

Common questions

Can I use this guide for my assignment?

Use it for planning and learning. Follow your rubric, cite sources properly, and request human support when your exact instructions need review.

Can Credencewriters review my draft?

Yes. Upload your draft, instructions, and feedback through the existing order panel for field-specific support.