ICD-10-CM 2027 Code Updates Guide | New Deleted Revised Codes Oct 1 2026 | Medical Coding Cheat Sheet | CPC Billing Reference | Printable

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✦ Everything that changes in ICD-10-CM on October 1, 2026 — in one audit-verified, print-friendly guide. ✦

The FY2027 ICD-10-CM update adds 190 codes, deletes 30, revises 4 titles, changes 5 official guidelines and rewrites dozens of Tabular instructional notes. Deleted codes will REJECT on claims with dates of service on or after October 1, 2026. This 24-page guide gives coders, billers, auditors and practice managers exactly what to change, why, and how to verify it — without wading through the 1,000-line CMS addenda yourself.

Every code and note in this guide was checked line-by-line against the official CMS/NCHS 2027 code-title addenda, Tabular addenda and the FY 2027 Official Guidelines for Coding and Reporting.

📌 WHAT'S INCLUDED (24 pages)

✔ FY2027 at a Glance — key dates, chapter-by-chapter counts, every file CMS updated ✔ All 5 Official Guideline changes explained — I11 "one or more," I16 crisis + I1A resistant hypertension, Chapter 17 genetic disorders, Z84.A / Z91.B DES exposure ✔ Chapter-by-chapter highlights with coding tips, Watch-Outs and CC flags — cardiology (I42/I47/I49), respiratory (J34.83-, J4B), digestive (K31.B, K6A, K74.0A), ortho/podiatry (M67.A, M72.2, M86.8X), OB (44 new O00/O31.4 codes), genetics (QA1 Lynch/BRCA/Li-Fraumeni), toxicology (T52/T59/T65), Z codes (Z68.18/19, Z77.4-, Z86.17, Z87.890-) ✔ Deleted-code crosswalk — all 30 invalid codes and what to report instead ✔ Instructional-note change table — Excludes1↔Excludes2 flips, new Code also / Code first / Use additional notes ✔ Complete verbatim list of all 190 new codes in Tabular order ✔ October 1 Readiness Checklist — systems, templates, education, audit sign-off ✔ Quick-Reference Card — 25 codes to memorize, print for your desk ✔ White background, US Letter — prints clean on any office printer

🚨 HIGH-VOLUME CHANGES YOU CAN'T MISS
Plantar fasciitis moves from M72.2 (deleted) to NEW M67.A01 / M67.A02 / M67.A09
BMI Z68.1 deleted → Z68.18 (≤18.4) and Z68.19 (18.5–19.9)
Dilated cardiomyopathy I42.0 deleted → I42.00 / I42.01 / I42.09
Other organic solvents T52.8X- deleted → T52.89-
Sternoclavicular sprain S23.420- deleted
New: odontogenic sinusitis, pulmonary mycetoma, post-bariatric hypoglycemia, VEXAS syndrome, Brugada syndrome, CPVT, medetomidine toxicity, C. diff history, blast-overpressure exposure
👩‍⚕️ WHO IS THIS FOR?
CPC, CCS, COC, CRC coders and coding auditors
Medical billers, RCM and denial-management teams
CDI specialists and HIM departments
Practice managers and billing-company owners running October 1 readiness
Students preparing for 2027 certification exams
📥 HOW DELIVERY WORKS

Digital download only — no physical item is shipped. After purchase, Etsy provides an instant download link to the high-resolution PDF. Print at home, at the office, or add it to your tablet.

🖨️ PRINTING TIPS
US Letter (8.5" × 11"); also fits A4
White background — no heavy ink. Print double-sided; laminate the Quick-Reference Card (page 23)
Keep the Deleted-Code Crosswalk (pages 12–13) next to your superbill remediation work
❓ QUESTIONS?

Message the shop — happy to help!

This guide is an educational reference prepared by Gana Medical Alliance from publicly available CMS/NCHS files. It is not legal, compliance, medical or billing advice. Always verify against the current official ICD-10-CM files, Official Guidelines, AHA Coding Clinic and payer policy. Gana Medical Alliance accepts no responsibility for coding or billing decisions made from this material. Not affiliated with or endorsed by CMS, CDC, AHA, AHIMA or AAPC. Licensed for personal / single-practice use; redistribution or resale prohibited.