FY 2027 ICD-10-CM Code Updates
Instructor
Cari Greenwood, RHIA, CCS, CPC, CICAGet ready for the FY 2027 ICD-10-CM diagnosis coding changes with HIAlearn’s self-paced course. This course reviews the new, revised, and deleted ICD-10-CM diagnosis codes effective October 1, 2026, along with updates to the ICD-10-CM Official Guidelines for Coding and Reporting.
You’ll also learn the reasons behind select significant changes, including the clinical rationale and documentation considerations coders need to understand. Designed for inpatient, outpatient, and professional fee coders, this approximately 60-minute course provides the context needed to apply the FY 2027 updates accurately and confidently.
Key Takeaways
- 190 New Codes: FY 2027 introduces 190 new ICD-10-CM codes, along with 30 deleted codes and four revised code titles.
- Major Areas of Change: The largest increases appear in Chapter 19, with 60 new codes; Chapter 15, with 44; and Chapter 13, with 31.
- Guideline Updates: Review one new guideline and revisions or additions affecting four existing guidelines.
- Hypertension Guidance: Understand wording changes involving hypertensive heart disease and the addition of resistant hypertension to the hypertensive crisis guideline.
- Expanded Specificity: Explore new codes for conditions including genetic cardiomyopathy, odontogenic sinusitis, ectopic pregnancy, vanishing twin syndrome and gender transition history.
- Alphabetic Index Changes: Learn how updated index entries reclassify certain conditions and introduce new ways to locate diagnoses.
- Tabular List Updates: Review changes to instructional notes, including Code First, Code Also, Use Additional Code, Excludes1 and Excludes2 notes.
- Implementation Date: Apply the FY 2027 ICD-10-CM updates to services provided beginning October 1, 2026.
FAQs
How many ICD-10-CM code changes are included for FY 2027?
FY 2027 includes 190 new ICD-10-CM codes, 30 deleted codes and four revised code titles. Although there are fewer new codes than in FY 2026, the updates include important changes to code specificity, instructional notes and coding guidance.
Which areas are most affected by the FY 2027 ICD-10-CM updates?
The greatest number of new codes appear in Chapter 19, Injury, Poisoning and Certain Other Consequences of External Causes; Chapter 15, Pregnancy, Childbirth and the Puerperium; and Chapter 13, Diseases of the Musculoskeletal System and Connective Tissue. Significant changes also affect cardiomyopathy, odontogenic sinusitis, ectopic pregnancy and several history and exposure Z codes.
Are the ICD-10-CM Official Guidelines changing for FY 2027?
Yes. The FY 2027 updates include one new guideline and revisions or additions affecting four existing guidelines. Changes address hypertensive heart disease, hypertensive crisis, genetic disorders and exposure to diethylstilbestrol.
When do the FY 2027 ICD-10-CM changes take effect?
The FY 2027 ICD-10-CM code and guideline updates take effect October 1, 2026. Coders should review the new, revised and deleted codes—as well as changes to the Alphabetic Index, Tabular List and instructional notes—before the implementation date.
About Our Medical Coding Courses
HIAlearn, powered by Health Information Associates (HIA)—a leader in medical coding and auditing for more than three decades—offers a flexible, online education platform designed for today’s coders. With a growing catalog of AHIMA and AAPC-approved coding courses, HIAlearn supports both beginners and experienced coders looking to build confidence, accuracy, and CEU credits.
Courses are available across various coding types including CPT, E/M, ICD-10-CM, and ICD-10-PCS, and are designed for multiple specialties including inpatient, outpatient, profee, and CDI.
To stay up to date, coders can explore our Coding Updates hub for the latest ICD-10-CM, ICD-10-PCS, CPT, and IPPS changes. HIAlearn also supports organizations with group discounts and scalable team access, promoting accuracy, compliance, and continuous professional development across departments.
Overview
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