Resource #1 — CPT®: Is Finding the Code Enough?
Have you ever asked someone why they coded something a certain way and received one of these answers? “That’s how we’ve always coded it.” “Someone told me that in training.” “That’s what our department does.” “I found the code that matched the procedure.”
Those answers may explain how someone arrived at a decision, but they do not necessarily establish the authoritative basis for that decision. This week, we’re doing something different. Instead of beginning with “What would you code?” we’re beginning with “Where Would You Look? Because knowing the answer is important. Knowing where the answer comes from makes that answer defensible.
You are reviewing an anesthesia-related procedure. The provider’s documentation clearly describes the service performed. You search the current CPT® code set and find a code whose descriptor appears to match the procedure perfectly. Everything looks straightforward. A coworker says, “that’s the code, the description matches the procedure, so you’re done.” Are you?
A. Yes. If the CPT® descriptor matches the documented procedure, no further research is necessary.
B. No. The code descriptor is important, but I should also review applicable CPT® guidelines, instructional notes, parenthetical instructions, and other relevant guidance.
C. No. I should search the internet and use whichever source gives the clearest answer.
D. I should use whatever code the department normally reports for this procedure.
Make your choice before you continue.
MY ANSWER: B
Finding a code that appears to describe the service is an important step, but it is not always the last step.
The AMA describes CPT® Professional Edition as the official CPT codebook containing the code set along with rules and guidelines from the CPT Editorial Panel. The AMA also advises that all language within a code descriptor should be assessed when identifying an existing code.
Depending on the service, your CPT® review may include:
- The complete code descriptor
- Applicable section or subsection guidelines
- Parenthetical instructions and notes
- Related codes and cross-references
- Definitions, conventions, and appendices that affect reporting
- Additional authoritative guidance when the CPT® code set alone does not resolve the question
This is why coding from a keyword search or encoder result alone can be risky. The code may look right, but have you reviewed the instructions that govern its use?
Source: Current CPT® code set / CPT® Professional Edition
Published and maintained by: American Medical Association (AMA), through the CPT Editorial Panel process. What I use it for, CPT® codes, descriptors, official guidelines, conventions, instructions, parenthetical notes, and other CPT reporting information. When do I check it, when determining how a medical service or procedure is described and reported using CPT.
What it does not necessarily answer by itself: Every payer-specific coverage, reimbursement, medical-necessity, claims-processing, or bundling question. Instead of stopping at “What code is it?” consider asking:
- What service was actually performed?
- Does the documentation support it?
- What does CPT® instruct us to do?
- Is there additional authoritative guidance?
- Are there bundling considerations?
- What does the applicable payer require?
Those are not all the same question, and they are not necessarily answered by the same resource. A code descriptor tells you what the code represents. It does not automatically answer every question about whether, when, or how that code should be reported in a particular circumstance.
The next time someone tells you, “you can’t bill that,” or “you should code this instead,” try asking, “can you show me the source?” Not to challenge the person or prove someone wrong. Seeing the source allows you to understand why the answer is the answer. Once you understand the why, you are not simply memorizing someone else’s coding decision—you are learning how to research and make the decision yourself.
A search engine can help you locate an authoritative resource. That does not make the search result itself the authority. The same principle applies to educational articles, presentations, discussion boards, social-media posts—and even Chart Talk. Educational resources can help explain a subject and point you toward sources, but the coding decision should ultimately be grounded in the applicable authoritative guidance.
When you have an anesthesia coding question, where do you look first? Do you start with CPT®, an encoder, CMS, a payer policy, a coworker, or a search engine? Here’s the bigger question, when was the last time you asked someone to show you the source behind a coding answer? Drop your answer in the comments.
Authoritative Resource: American Medical Association — CPT® code set: The basics and resources. The AMA states that CPT® Professional Edition is the official CPT codebook with rules and guidelines from the CPT Editorial Panel and recommends assessing all language within a code descriptor when identifying an existing code. Official AMA resource: https://www.ama-assn.org/practice-management/cpt/cpt-code-set-basics-and-resources
COMING TOMORROW
Resource #2 — CPT Assistant: What Do You Do When the Codebook Doesn’t Answer the Question?
Tomorrow we’re going beyond the CPT® code set and looking at another AMA resource that can be valuable when the answer is not sitting neatly in the code descriptor.
EDUCATIONAL DISCLAIMER
This content is provided for educational and informational purposes only and is not legal, billing, compliance, or payer-specific advice. Coding and billing decisions should be based on the complete medical record, current official coding guidance, applicable payer policies, contractual requirements, and organizational compliance policies.
CPT® is a registered trademark of the American Medical Association.
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