Insurance Billing

How to Bill Insurance as a Registered Dietitian (2026 Guide)

A step-by-step guide to insurance billing for private-practice RDs: credentialing, verifying benefits, coding sessions, submitting claims, and getting paid without denials.

By Alva Health Team · Published July 12, 2026 · ← All articles

Insurance is how a private nutrition practice scales past the limits of cash-pay: clients stay longer, refer more, and don't drop off when their budget tightens. But between credentialing, eligibility, coding, and claims, the billing side can feel like a second unpaid job.

This is the complete map — the five stages between "I want to take insurance" and "reimbursements arrive on time." Once you see the whole pipeline, each piece is manageable.

Stage 1: Get credentialed (become in-network)

Credentialing is the process of becoming an in-network provider with a payer. The sequence:

1. Get your NPI (National Provider Identifier) — free at the NPPES website. You'll want a Type 1 (individual) NPI; if you've formed an LLC or group, also a Type 2 (organization) NPI.
2. Complete your CAQH ProView profile. Nearly every commercial payer pulls your credentials from CAQH. Keep it current and re-attest quarterly — a stale CAQH profile is the #1 cause of credentialing stalls.
3. Apply to payers. Prioritize 2–4 payers based on what your target clients actually carry (ask them, or look at the dominant employers/plans in your area).
4. Negotiate and sign the contract. Request the fee schedule for 97802/97803 before signing — this is your real price list.
5. Wait for your effective date. The full cycle typically runs 60–120 days per payer. Sessions delivered before your effective date generally won't be paid, so don't jump the gun.

Cash-pay note: you can absolutely run a hybrid practice — in-network with one or two payers, cash + superbill (a coded receipt the patient submits for out-of-network reimbursement) for everything else.

Stage 2: Verify benefits before the first session

This is the single highest-leverage habit in nutrition billing. Before a new client's first appointment, verify:

• Does the plan cover nutrition counseling / MNT at all?
• Under which benefit — preventive (often unlimited visits at $0 cost-share for the patient) or medical (may involve copay/deductible)?
• Which diagnoses does the benefit apply to? (This determines your ICD-10 coding.)
• Is a physician referral required?
• Visit limits — how many sessions per year, and how many are already used?
• Telehealth coverage — allowed, and at what rate?
• Copay / coinsurance / deductible — what will the patient owe?

Skipping this step means discovering the answer after you've delivered the care — in the form of a denial. Verifying benefits is tedious (portal logins, hold music, inconsistent answers), which is why practices either batch it, outsource it, or automate it. But whoever does it, it must be done, and re-checked periodically: patient coverage changes mid-year more often than you'd think.

Stage 3: Code the session correctly

The coding layer is small — three CPT codes and a handful of ICD-10 pairings — but precise. In brief:

• 97802 (initial assessment) for the first visit only; 97803 for all follow-ups. Both in 15-minute units — a 60-minute session is 4 units.
• ICD-10: pair the CPT with a diagnosis the payer's policy actually covers. Z71.3 (dietary counseling) is standard for preventive visits, but some payers won't accept it as primary — a medical diagnosis from the referral (E11.9, N18.x, E66.9…) may need to lead, often with a BMI code (Z68.x) attached.
• Telehealth: modifier 95, POS 10 or 02.

We cover every detail — the unit math, the payer quirks, the denial traps — in the full guide to CPT codes for dietitians.

The part nobody says out loud: correct coding depends on correct documentation. Your note must support the time you billed and the diagnosis you claimed. If your charting is reconstructed from memory at 9pm, your billing inherits that fuzziness.

Stage 4: Submit the claim

Claims go to payers on the CMS-1500 form (or its electronic equivalent, the 837P), usually through a clearinghouse — a service that validates and routes electronic claims and returns status updates. Practice management platforms include this; standalone clearinghouse accounts also exist.

What a clean claim needs, beyond the codes:

• Your NPI (and Tax ID / group NPI if applicable) matching what the payer has on file from credentialing
• Patient demographics and member ID exactly as printed on the card
• Referring provider's NPI, if a referral is required
• Date of service, POS, units, and your billed charge
• Timely filing — most payers require submission within 90–180 days of the date of service; miss it and the claim is dead regardless of merit

After submission, track the claim's status: accepted by the clearinghouse → accepted by the payer → paid, or rejected/denied somewhere along the way. Claims that fail validation at the clearinghouse never even reach the payer — silent losses if nobody is watching the queue.

Stage 5: Get paid, post payments, and work denials

When the payer processes your claim, you receive an ERA/EOB (electronic remittance advice) explaining what they paid, what the patient owes, and any adjustments:

• Post the payment against the session so your books reflect reality.
• Bill the patient for their copay/coinsurance portion promptly (or collect copays at booking and skip the chase).
• Work denials within days, not months. Most denials are correctable — wrong diagnosis pairing, missing modifier, eligibility mismatch — and payers allow corrected claims or appeals. Every denial you don't work is revenue you already earned and simply didn't collect. Our breakdown of the most common nutrition claim denials covers the fix for each one.

The honest math: what this costs you in time

Run the pipeline manually and a single insurance client costs you roughly:

Across a caseload of 40–60 sessions a month, that's 15–25 hours of monthly admin — evenings and weekends, in practice. This is exactly the work that's now automatable: eligibility checks, note-to-codes-to-claim generation, submission, status tracking, and payment posting can all run without you touching them.

How Alva helps: Alva runs this entire pipeline — verifies benefits before the session, documents the visit, generates validated codes, submits the claim, tracks it, and posts the payment when insurance pays. You see clients; Alva gets you paid.

Your 30-day starting checklist

1. ☐ NPI (Type 1, plus Type 2 if you have an entity)
2. ☐ CAQH profile complete and attested
3. ☐ Applications submitted to your top 2–4 payers
4. ☐ Fee schedules requested and reviewed
5. ☐ A benefits-verification script/checklist for new clients
6. ☐ A documentation template that captures time and diagnosis cleanly
7. ☐ A clearinghouse (or platform) to submit and track claims
8. ☐ A weekly 30-minute slot to review claim statuses and work denials — until you automate it away