--- title: "CPT Coding Guidelines Review: Moderate (Conscious) Sedation" description: This installment of the series explores the guidelines related to CPT coding for moderate (conscious) sedation. image: https://hiacode.com/hubfs/CPT%20Coding%20Guidelines%20Review%20Moderate%20(Conscious)%20Sedation%20Cover%20Photo.png --- # CPT Coding Guidelines Review: Moderate (Conscious) Sedation ![Cari Greenwood, RHIA, CCS, CPC](https://hiacode.com/hubfs/Cari%20Greenwood%20Author%20Bio%20(1).png) [Cari Greenwood, RHIA, CCS, CPC](https://hiacode.com/blog/author/cari-greenwood) Jul 21, 2025 [Industry News](https://hiacode.com/blog/tag/industry-news) [Medical Coding Tips](https://hiacode.com/blog/tag/medical-coding-tips) ![CPT Coding Guidelines Review: Moderate (Conscious) Sedation](https://hiacode.com/hubfs/CPT%20Coding%20Guidelines%20Review%20Moderate%20(Conscious)%20Sedation%20Cover%20Photo.png) - Share on: - [![](https://hiacode.com/hubfs/Facebook%20svg.svg)](http://www.facebook.com/share.php?u=https://hiacode.com/blog/cpt-coding-guidelines-moderate-conscious-sedation) - [![](https://hiacode.com/hs-fs/hubfs/twitter.png?width=32&height=32&name=twitter.png)](https://twitter.com/intent/tweet?text=I+found+this+interesting+blog+post&url=https://hiacode.com/blog/cpt-coding-guidelines-moderate-conscious-sedation) - [![](https://hiacode.com/hubfs/LinkedIn%20svg.svg)](http://www.linkedin.com/shareArticle?mini=true&url=https://hiacode.com/blog/cpt-coding-guidelines-moderate-conscious-sedation) - [![](https://hiacode.com/hubfs/mdi_email.svg)](mailto:?subject=Check%20out%20https://hiacode.com/blog/cpt-coding-guidelines-moderate-conscious-sedation%20&body=Check%20out%20https://hiacode.com/blog/cpt-coding-guidelines-moderate-conscious-sedation&media=https://20824215.fs1.hubspotusercontent-na1.net/hubfs/20824215/CPT%20Coding%20Guidelines%20Review%20Moderate%20%28Conscious%29%20Sedation%20Cover%20Photo.png) - ![](https://hiacode.com/hubfs/entypo_link.svg) copied This is a series of blogs about the importance of being familiar with CPT coding guidelines. Often there is extensive guidance preceding a subsection or range of codes for particular procedures, but coders are very busy so sometimes they jump right into the codes without taking time to review these guidelines, even though following or not following their direction could significantly affect the accuracy and comprehensiveness of coding. This series is designed to help you become familiar with guidelines for significant procedures that you might not be acquainted with but do impact coding. The presentations are short and meant to generate awareness of the guidelines that are available in CPT rather than the application of guidelines to specific coding scenarios. This installment of the series explores the guidelines related to CPT coding for moderate (conscious) sedation. ## CPT Guidelines Moderate (Conscious) Sedation Please watch this presentation to learn about the guidelines that provide direction in assigning CPT codes for moderate (conscious) sedation. ## Take Aways - The work reported with codes 99151-99157 includes: - Preservice work - Intraservice work - Postservice work - Code selection is based on the provision of intraservice work alone, based on increments of 15 minutes - Pre and Postservice work activities are not separately reportable - Codes 99151-99157 are not used to report - Pain control - Minimal sedation - Deep sedation - Monitored anesthesia care - If a physician or other QHP is both performing the procedure and providing the sedation service an independent, trained observer must be present to monitor the patient - Units of intraservice time are calculated based on ranges of time ## Test Your Knowledge For detailed explanations of the quiz answers, please refer to the end of this blog post. To find additional instruction in coding for anesthesia, explore the course [Anesthesia Services ](https://hialearn.com/coding-course/anesthesia)on [HIAlearn.com](https://hialearn.com).  [![  Anesthesia   HIAlearn’s Anesthesia Coding course is a self-paced, online training designed for outpatient and professional fee coders looking to strengthen their understanding of anesthesia coding guidelines and modifiers. Approved for 1 CEU by both AHIMA and AAPC, this course covers essential documentation elements, time reporting rules, and how to assign the correct CPT codes and physical status modifiers. Whether you're new to anesthesia or need a quick refresher, this course helps you code more accurately and avoid common mistakes.  ](https://no-cache.hubspot.com/cta/default/20824215/interactive-193129007375.png) ](https://hiacode.com/hs/cta/wi/redirect?encryptedPayload=AVxigLJ8UGhZo3RzIty9AykkS3XIncDgUk0PexjgV7PYCbrknExFMJIbi4YZ3RWMFd7QIGvUFUuJStQYBzW0nz79pWD9ey3Clu0O2dQAo8sNv5IYfkiVvbktmLv2nU6zrhsi3jsJp7%2FMdS1rSTgXZBQ0J0BeQN8kiSB0HqyqKQJEPUvwvY30yNv9g87nRtBcL5j5ng%3D%3D&webInteractiveContentId=193129007375&portalId=20824215) ## Additional Coding Education: Invest in You! Be sure to watch for other installments of CPT Coding Guidelines Review and visit [HIAlearn.com](https://hialearn.com) to explore other educational products designed to help coders be their best! [Subscribe to our YouTube channel](https://www.youtube.com/playlist?list=PLRTMZqNtL4RfHWFpdrUzubsiFhF86q6de) to be notified when the next video is live. [![CTA](https://no-cache.hubspot.com/cta/default/20824215/interactive-184670472823.png) ](https://hiacode.com/hs/cta/wi/redirect?encryptedPayload=AVxigLLwHsG18oOfbGgJ5Yef57baEZ9EQXmvevv%2BfNbnNsLdF2l2gkI%2BwuD4uZ%2FMe7DWrwpbODrdGxUIeXi0A5mAnEdqdymigcZC8aiC0WoltxNzB5PoTqj%2B%2Fq6mU987cOag4bYV9vxitFWrtKujAI1zKZVWSONuf3g%2BKiIq8c0ukeFDP3KUeqcw9riDPdtCxb9WnVO8HzbXfXlgyo2hrUzYupjU3q5kwAnELq3G8Q%3D%3D&webInteractiveContentId=184670472823&portalId=20824215) ## Quiz Answers and Rationale Question 1: The answer is completion of a pre-sedation assessment form. Completion of a pre-sedation assessment form is part of the preservice work for administering conscious sedation. All other options are included in intraservice or postservice work. Question 2: The answer is 1 regular unit and 2 add-on units. Based on the table in CPT, 45 minutes of intraservice work for conscious sedation is reported with one unit of regular time (99151/99152) plus 2 two add-on units of 99153. --- Since 1992, HIA has been the leading provider of [compliance audits](https://hiacode.com/acute-review), [coding support services](https://hiacode.com/acute-coding-support) and [clinical documentation audit services ](https://hiacode.com/clinical-documentation-integrity)for [hospitals](https://hiacode.com/hospitals), [ambulatory surgery centers](https://hiacode.com/asc-coding), [physician groups](https://hiacode.com/provider-groups) and other healthcare entities. HIA offers [PRN support](https://hiacode.com/prn-contract-coding-support) as well as [total outsource support.](https://hiacode.com/total-outsource-coding) --- > ***The information contained in this coding advice is valid at the time of posting. Viewers are encouraged to research subsequent official guidance in the areas associated with the topic as they can change rapidly.***  ##### [Previous](https://hiacode.com/blog/querying-for-sepsis-clinical-indicators-sofa-score) ### [Querying for Sepsis: How to Identify Clinical Indicators and Avoid Leading Language](https://hiacode.com/blog/querying-for-sepsis-clinical-indicators-sofa-score) ##### [Next](https://hiacode.com/blog/querying-diabetes-mellitus-with-complications) ### [When to Query for Diabetes Mellitus with Complications](https://hiacode.com/blog/querying-diabetes-mellitus-with-complications) Serach Blog Post ## Need to Earn CEUs? Our coding education platform, HIAlearn.com, offers courses related to this topic and many more. 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[ Read More](https://hiacode.com/blog/proactive-coding-quality-assurance) ## Subscribe to our Newsletter Weekly medical coding tips and coding education delivered directly to your inbox. ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Cari Greenwood, RHIA, CCS, CPC", "url" : "https://hiacode.com/blog/author/cari-greenwood" }, "dateModified" : "2025-08-20T13:25:01.414Z", "datePublished" : "2025-07-21T15:24:16.000Z", "headline" : "CPT Coding Guidelines Review: Moderate (Conscious) Sedation", "image" : [ "https://hiacode.com/hubfs/CPT%20Coding%20Guidelines%20Review%20Moderate%20(Conscious)%20Sedation%20Cover%20Photo.png" ], "mainEntityOfPage" : { "@id" : "https://hiacode.com/blog/cpt-coding-guidelines-moderate-conscious-sedation", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://hiacode.com/hubfs/HIA_RGB_AlternativeLogo%20(1)%20(1).png" }, "name" : "Health Information Associates" } } ```