Washington Apple Health Enteral Nutrition Billing Guide

1. Overview

Apple Health, Washington States Medicaid program, provides coverage for enteral nutrition (EN) when medically necessary. This guide summarizes the key policies, coding rules, and billing steps that healthcare providers, dietitians, and homehealth agencies must follow to receive timely reimbursement.

2. Eligibility & Enrollment

• Beneficiary enrollment: The patient must be enrolled in Apple Health and have an active Medicaid ID.
• Medical necessity: A physician must document a diagnosis that requires EN (e.g., dysphagia, neurologic disease, severe malnutrition) and prescribe a specific formula, route, and duration.
• Prior authorization: For most nonhomeinfusion services, a Prior Authorization (PA) is required before the first delivery. The PA number must be recorded on every claim.

3. What Services Are Covered

Apple Health covers the following components when ordered by a qualified prescriber:

• Enteral formula (standard, peptidebased, diseasespecific)
• Feeding tubes (nasogastric, gastrostomy, jejunostomy) and accessories
• Supplies: syringes, pumps, connectors, caps, extension sets
• Home infusion services, including nursing visits for tube placement, training, and followup
• Dietitian nutrition counseling related to EN

4. Coding & Documentation Requirements

Procedure Codes (CPT/HCPCS)

Code	Description	When to Use
A9270	Enteral nutrition formula, per 1,000 kcal	Standard formula dosage
A9272	Enteral nutrition formula, peptide or elemental	Specialized formulas
A9276	Enteral feeding supplies tube set	Tube kits & accessories
A9277	Enteral feeding supplies pump	Infusion pump rental
G0299	Home health aide services related to enteral nutrition	Qualified aide assistance
99.30	Enteral feeding device placement	Physician placement of Gtube, Jtube

Diagnosis Codes (ICD10CM)

Use the most specific diagnosis that reflects the underlying condition. Common examples include:

• K21.9 Gastroesophageal reflux disease without esophagitis
• R13.10 Dysphagia, unspecified
• E43 Severe proteincalorie malnutrition
• G56.01 Carpal tunnel syndrome, right upper limb (when tube placement is related)

Documentation Checklist

• Physicians order with formula type, volume, frequency, and duration
• Medical record note confirming medical necessity and inability to meet needs orally
• Prior Authorization number (if required) on every claim
• Date of service, length of therapy, and patients weight (used for dosage calculations)
• Signature of the prescribing clinician or authorized delegate

5. Claims Submission Process

1. Gather required data: Verify Medicaid ID, PA number, diagnosis, CPT/HCPCS codes, and unit counts.
2. Create the claim in your practice management or billing system. Use the Professional claim type for physicianordered services and Institutional for homehealth or infusion vendor claims.
3. Submit electronically via the Washington Health Benefit Exchange (WHBE) portal or through an approved clearinghouse. Paper claims are discouraged and may be rejected.
4. Monitor acknowledgment: WHBE returns an EDI 997 (Functional Acknowledgment). Resolve any syntax errors before final submission.
5. Track status in the provider portal. Common rejections include Missing PA, Invalid diagnosisprocedure combination, or Exceeded allowable amount.

6. Reimbursement Rates & Payment

Apple Health uses a feeforservice model for EN. Rates are published annually in the Washington Medicaid Provider Fee Schedule. Key points:

• Formulas are reimbursed per 1,000 kcal; the unit multiplier is calculated from the prescribed daily calories.
• Supplies have a set perunit fee; pump rentals are reimbursed monthly.
• Homehealth nursing is paid under the Home Health Prospective Payment System (HH PPS) with a separate EN addon rate.
• Reimbursement is capped at the Maximum Allowable amount per member per month; excess units are denied.

7. Common Audit Findings & How to Avoid Them

Issue	What Auditors Look For	Prevention Strategy
Missing Prior Authorization	PA number absent or mismatched	Include PA on every line item; doublecheck before submission
Improper Coding	Using A9270 for peptide formula	Match formula type to correct HCPCS
Unsupported Diagnosis	Diagnosis does not justify EN	Attach physicians justification note
Duplicate Billing	Same service billed twice in a month	Use claim editing software to flag repeats

8. Helpful Resources

• Washington Medicaid Provider Manual (PDF)
• WHBE Provider Portal for PA requests and claim submission
• CMS HCPCS & ICD10 Resources
• Washington State Department of Health Nutrition Services Hotline: 18005551234
• Professional development webinars on EN billing (often hosted by the Washington Dietetic Association)

By following the guidelines outlined above, providers can minimize claim denials, ensure compliance with state regulations, and deliver essential nutrition support to Apple Health beneficiaries.