12 Min Read
SaMeD RCM Solutions Team
Medical coding requirements continue to evolve as healthcare services, technologies, and clinical practices advance. For medical practices, billing companies, and healthcare professionals, staying informed about annual coding changes is essential for maintaining accurate claims and supporting appropriate reimbursement.
The 2027 coding updates bring important changes across ICD-10-CM, CPT, and HCPCS Level II. These updates affect how diagnoses, medical procedures, and certain healthcare services are reported to insurance payers.
One particularly significant development is the restructuring of maternity care coding under CPT 2027. Other updates affect procedure reporting, medical technologies, diagnostic services, and coding guidelines.
For healthcare practices, failing to implement applicable changes can lead to incorrect code selection, claim rejections, payment delays, and additional administrative work.
In this article, SaMeD RCM Solutions explains the important 2027 medical coding updates and what healthcare providers, billing teams, and coding professionals should know.
ICD-10-CM is the diagnosis classification system used throughout the United States to report patient conditions, diseases, symptoms, and reasons for healthcare encounters.
The FY 2027 ICD-10-CM update became effective October 1, 2026, and applies through September 30, 2027.
Healthcare providers and coding professionals must use the appropriate code set based on the date of service.
Billing and coding teams should pay attention to:
Diagnosis codes must accurately represent the patient’s documented medical condition.
Using an outdated or incorrect code may result in claim processing issues, reimbursement delays, or compliance concerns.
Best Practice: Update your EHR and billing system diagnosis code libraries and ensure coding staff are using the FY 2027 ICD-10-CM files for applicable dates of service.
The American Medical Association (AMA) released the CPT 2027 code set in September 2026.
The new code set includes 453 total editorial changes:
These changes reflect advancements in medical procedures, diagnostic services, technology, and contemporary clinical practices.
Several areas deserve particular attention from medical practices and billing teams.
One of the most significant CPT 2027 changes involves maternity care services.
The traditional global maternity care billing structure is being replaced with more detailed reporting that reflects the different phases of pregnancy and delivery.
The new structure separates reporting into areas such as:
This change is designed to better represent modern obstetric care, including team-based services and different care arrangements throughout pregnancy.
What Does This Mean for OB/GYN Practices?
Practices providing maternity care should prepare for substantial billing workflow changes.
They should:
The traditional global maternity codes will no longer be valid for dates of service beginning January 1, 2027.
This is an important transition that OB/GYN practices should address before the new year.
CPT 2027 includes new and revised reporting guidance for ventricular assist device procedures.
These updates include three new codes related to left ventricular assist devices.
Healthcare organizations reporting these services should review the new code descriptions and applicable documentation requirements.
Nine new CPT codes expand reporting options for diaphragmatic hernia repair.
These changes address different surgical approaches, including open, laparoscopic, and thoracoscopic procedures, as applicable.
Surgical practices should review the updated code structure to ensure that procedure reporting accurately reflects the services performed.
Updates to prostate biopsy codes and guidelines are intended to better reflect current biopsy techniques and improve reporting specificity.
Urology practices and their coding teams should review the revised code descriptions and documentation requirements before submitting claims.
CPT 2027 introduces a new time-based code structure for biofeedback services.
The changes are intended to better align reporting with how these services are delivered in clinical practice.
Practices providing biofeedback services should review the new reporting requirements and ensure that time documentation supports the codes selected.
Additional CPT updates affect radiology and sleep medicine.
These include:
Radiology and sleep medicine providers should review the applicable code descriptions, reporting guidelines, and payer policies.
Artificial intelligence continues to influence medical services and healthcare technology.
The CPT 2027 code set introduces 10 additional AI-related codes, bringing the total number of AI-related CPT codes to 43.
These codes support more specific reporting of certain AI-related services that assist healthcare professionals.
Medical practices should evaluate whether any of these services apply to their operations and ensure that reporting is consistent with the applicable CPT guidelines.
Best Practice: Do not carry forward previous CPT coding practices without reviewing the 2027 code set. Pay particular attention to deleted codes, revised descriptors, and new reporting instructions.
HCPCS Level II codes identify healthcare products, supplies, equipment, and certain services that are not represented by CPT codes.
These codes are commonly used for:
CMS publishes HCPCS Level II updates quarterly.
Practices should review:
Because quarterly updates may affect code validity and reporting, billing teams should not rely exclusively on an annual code review.
Best Practice: Monitor the official CMS HCPCS quarterly update files and ensure billing systems reflect the correct code set for the date of service.
The National Correct Coding Initiative (NCCI) is designed to promote correct coding and help prevent improper payments under Medicare.
NCCI edits are particularly important when multiple procedures or services are reported together.
Two important types of edits include:
Procedure-to-Procedure (PTP) Edits
These edits identify code combinations that generally should not be reported together under applicable coding rules, subject to permitted exceptions.
Medically Unlikely Edits (MUEs)
These edits help identify potentially incorrect units of service reported for individual CPT or HCPCS codes.
CMS has also published an NCCI add-on code edit update for the first quarter of 2027, effective January 1, 2027.
Best Practice: Review applicable NCCI edits before claim submission and ensure that modifiers are supported by documentation and current coding guidance.
Even when a coding professional selects the correct code, incomplete clinical documentation can create reimbursement problems.
Medical documentation should support the services, diagnoses, and procedures reported on the claim.
Important documentation considerations include:
Coding professionals should never select codes simply because they generate higher reimbursement.
The documentation must support the reported services and comply with applicable coding guidelines.
Best Practice: Establish regular documentation reviews and maintain communication between providers, coding professionals, and billing teams.
With new and revised coding requirements, medical practices should pay attention to common billing and coding mistakes.
1. Using Deleted CPT Codes
Continuing to report deleted CPT codes for dates of service after their effective deletion can result in claim rejections.
2. Ignoring New ICD-10-CM Guidelines
Using outdated diagnosis code references can lead to incorrect code selection and reporting errors.
3. Incorrect Modifier Usage
Missing or unsupported modifiers can affect claim processing and reimbursement.
4. Incorrect Units of Service
Reporting inaccurate units can create billing discrepancies and potential compliance concerns.
5. Ignoring NCCI Edits
Failure to review applicable coding edits can result in incorrect code combinations.
6. Inadequate Clinical Documentation
Documentation that does not support the reported diagnosis or procedure can lead to denials or requests for additional information.
7. Failure to Update Billing Software
Outdated code libraries, claim templates, and billing system configurations can create avoidable submission problems.
8. Not Preparing for the Maternity Coding Transition
OB/GYN practices that continue using deleted global maternity codes for 2027 dates of service may encounter claim rejections and reimbursement issues.
Preparing for coding updates requires coordination between providers, billing professionals, coders, and practice administrators.
Here are eight practical steps:
1. Update ICD-10-CM Code Libraries
Ensure that your EHR and billing software contain the appropriate FY 2027 diagnosis codes.
2. Review CPT 2027 Changes
Identify new, revised, and deleted codes that affect your medical specialty.
3. Prepare for Maternity Coding Changes
OB/GYN practices should update workflows, claim templates, staff training, and payer arrangements before January 1, 2027.
4. Monitor HCPCS Quarterly Updates
Review CMS releases to identify changes affecting products, supplies, and services.
5. Review Medicare NCCI Edits
Check applicable PTP, MUE, and add-on code edits for the relevant effective dates.
6. Conduct Coding Audits
Review sample claims to identify incorrect coding, documentation gaps, and recurring errors.
7. Train Billing and Coding Teams
Provide staff with practical education on the coding changes affecting their specialties.
8. Review Payer-Specific Policies
Remember that code availability does not automatically mean a service is covered or reimbursable by every payer.
Coding updates are not just technical changes. They can directly affect medical billing workflows and reimbursement performance.
When coding changes are not implemented correctly, practices may experience:
A proactive approach to coding updates helps practices identify potential issues before they affect claim submission.
Accurate coding, complete documentation, appropriate claim review, and consistent denial follow-up should remain essential components of every revenue cycle.
At SaMeD RCM Solutions LLC, we understand that coding accuracy is essential to maintaining an efficient and reliable revenue cycle.
Our medical billing and revenue cycle management services support healthcare practices across the United States with billing workflows, coding support, claim review, and reimbursement follow-up.
Our services include:
We support multiple medical specialties and understand the importance of keeping billing workflows aligned with applicable coding guidelines and payer requirements.
Our objective is to help healthcare practices improve billing accuracy, reduce preventable revenue leakage, and strengthen operational efficiency.
The 2027 coding updates bring important changes that healthcare providers, medical billing teams, and coding professionals should understand and prepare for.
From the FY 2027 ICD-10-CM updates to the CPT 2027 changes and the major restructuring of maternity care reporting, these developments require attention before claims are submitted.
Practices should review official coding resources, update their billing systems, train their teams, and monitor payer-specific requirements.
Staying informed and preparing early can help reduce avoidable billing errors and support a more efficient revenue cycle.
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1. When do the 2027 medical coding updates take effect?
The FY 2027 ICD-10-CM updates became effective October 1, 2026. Most CPT 2027 changes take effect January 1, 2027. HCPCS Level II updates are published quarterly, with individual effective dates specified by CMS.
2. What are the major CPT 2027 changes?
CPT 2027 includes 299 new codes, 74 revised codes, and 80 deleted codes. Important areas include maternity care, ventricular assist devices, hernia repair, prostate biopsy, biofeedback, radiology, sleep medicine, and AI-related services.
3. What is changing in maternity care coding in 2027?
Traditional global maternity codes are being replaced by more detailed reporting for antepartum care, labor management, delivery, and postpartum services. The new structure becomes effective January 1, 2027.
4. Why are ICD-10-CM updates important?
ICD-10-CM updates ensure that diagnosis reporting reflects current classification requirements. Using valid codes for the date of service helps support accurate claim submission and appropriate reimbursement.
5. How often does CMS update HCPCS Level II codes?
CMS publishes HCPCS Level II updates quarterly. Billing teams should monitor these releases to identify new, revised, and deleted codes and their effective dates.
6. Can coding changes affect insurance reimbursements?
Yes. Incorrect code selection, outdated codes, unsupported modifiers, or insufficient documentation can contribute to claim rejections, denials, and payment delays.
7. How can medical practices prepare for 2027 coding updates?
Practices should update coding software, review official code sets, train billing teams, conduct coding audits, monitor payer policies, and prepare for specialty-specific changes.
Disclaimer: This article is intended for general educational purposes only and does not constitute legal, coding, or reimbursement advice. Coding requirements and payer policies may change. Always verify applicable codes, effective dates, official coding guidelines, and payer-specific requirements before submitting claims.
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