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S9435 HCPCS Level II code: Medical foods for inborn errors of metabolism

S9435 is the HCPCS code for “Medical foods for inborn errors of metabolism” in CMS’s October 2026 release, in effect from Oct 1, 2026.

Official description

S9435

Medical foods for inborn errors of metabolism

Short description: Medical foods for inborn err

HCPCS · United States

Notes for S9435

As CMS prints them, with any note S9435 takes from the headings above it.

Note

  • CMS processing note 0088: "S" CODES ARE UNIQUE TEMPORARY CODES ESTABLISHED BY BCBSA AND HIAA FOR PRIVATE PAYOR USE. THEY ARE NOT VALID NOR PAYABLE BY MEDICARE.

Medicare details

The indicators CMS publishes with S9435 in its October 2026 file. They describe Medicare’s handling, not another payer’s.

Medicare coverage
Not payable by Medicare
Medicare pricing
Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)
Type of service
Other medical items or services
BETOS category
Undefined codes
Added
Jan 1, 2001

Where S9435 sits

  1. 1S codesTemporary national codes (non-Medicare)
  2. 2Active code S9435Medical foods for inborn errors of metabolism

Source and release

Data release
HCPCS Level II · October 2026
Effective date
Oct 1, 2026
Publisher
CMS

This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See S9435 in the CMS source

Frequently asked questions

What does HCPCS code S9435 mean?

S9435 is the HCPCS code for “Medical foods for inborn errors of metabolism” in CMS’s HCPCS Level II October 2026 release.

Does Medicare cover S9435?

CMS lists S9435’s Medicare coverage as “Not payable by Medicare” and its pricing as “Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.

Which HCPCS Level II release does this page use?

It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside S9435

S9381Delivery or service to high risk areas requiring escort or extra protection, per visitS9401Anticoagulation clinic, inclusive of all services except laboratory tests, per sessionS9430Pharmacy compounding and dispensing servicesS9432Medical foods for non-inborn errors of metabolismS9433Medical food nutritionally complete, administered orally, providing 100% of nutritional intakeS9434Modified solid food supplements for inborn errors of metabolismS9436Childbirth preparation/lamaze classes, non-physician provider, per sessionS9437Childbirth refresher classes, non-physician provider, per sessionS9438Cesarean birth classes, non-physician provider, per sessionS9439Vbac (vaginal birth after cesarean) classes, non-physician provider, per sessionS9441Asthma education, non-physician provider, per sessionS9442Birthing classes, non-physician provider, per session