00 Preparing for the 2027 Coding Updates

The most significant structural shift for 2027 is the deletion of global obstetric bundles, replacing them with discrete, service-level reporting. For inpatient profee, this fundamentally changes how delivery, operative repairs, and inpatient postpartum care are captured.

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Confirmed: FY 2027 ICD-10-CM (effective Oct 1, 2026)

• CMS released the FY2027 file in June 2026: 190 new billable codes (238 total entries with non-billable headers), 4 revised codes, and 21–30 deleted codes, depending on how you count restructured vs. truly retired ones.
• The one deletion showing up over and over across sources (AAPC, ACDIS, AGS Health, KZA) is S23.420- and its full 7th-character family — Sprain of sternoclavicular joint/ligament (initial, subsequent, sequela). That’s musculoskeletal/ortho, not urology, ENT, or PM&R.
• Several sources note most of the 21 “deletions” aren’t diagnoses disappearing — they’re being split into more granular replacement codes (same with the T52.8x toxic-effects family).

CPT Code	2027 Status	Description / Application
59431	New	Vaginal delivery, with or without episiotomy (includes placenta delivery and routine same-day postpartum care).
59432	New	Vaginal delivery, with/without episiotomy; after previous cesarean delivery.
59502	New	Cesarean delivery; primary (reported once per delivery event regardless of multiples).
59503	New	Cesarean delivery; repeat.
59433	New	Repair of episiotomy or laceration; third-degree.
59434	New	Repair of episiotomy or laceration; fourth-degree.

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FY 2027 ICD-10-CM Updates (Effective Oct 1, 2026)**

The FY 2027 update introduces 190 new diagnosis codes. These are the most relevant additions for chart abstractions across urology, otolaryngology, and physical medicine:

• Otolaryngology (ENT) & Head/Neck:
  • J34.830 Odontogenic sinusitis, maxillary sinus (the new J34.83 subcategory also covers ethmoid, frontal, and sphenoid variations).
  • C78.31 Secondary malignant neoplasm of larynx.
  • C78.32 Secondary malignant neoplasm of pharynx.
  • C79.83 Secondary malignant neoplasm of oral cavity.
• Urology & Pelvic:
  • K6A.01 Prevesical abscess.
  • K6A.09 Other pelvic abscess.
• Physical Medicine & Rehabilitation (PM&R):
  • M67.A01 Plantar fasciitis, right foot.
  • M67.A02 Plantar fasciitis, left foot.
  • (Note: For PM&R charts involving multiple sclerosis, continue reporting the expanded G35.D subcategory implemented earlier this year, as the parent code remains invalid for billing).
• General Inpatient Rounding:
  • E89.830 Post bariatric hypoglycemia (includes a “Use Additional” note for hypoglycemia level).
  • Z68.18 Body mass index (BMI) 18.4 or less, adult.

📚 Sources

• American Medical Association (AMA): “FAQs: CPT® 2027 Maternity Care Services code changes”
• Association of Clinical Documentation Integrity Specialists (ACDIS): “News: ICD-10-CM code set for fiscal year 2027 released”
• AAPC: “CPT® 2027 Maternity Care Codes Spark Debate”