Taxonomy Codes and Billing Codes for Doulas: What You Actually Need to Know

Part of the BirthPro Business Basics series

If you've applied for your NPI number (if not, start here), you've probably hit a screen asking for your taxonomy code and thought: what is this, and does it even apply to me?

It does. And once you understand what these codes are and how they work together, billing gets a lot less mysterious.

What Is a Taxonomy Code?

A taxonomy code is a 10-character code that identifies what type of provider you are. It's maintained by the National Uniform Claim Committee (NUCC) and is required when you apply for your NPI through the NPPES registry.

Taxonomy codes don't describe what you do in a session — they describe who you are as a provider. Think of it as your professional category on file with the healthcare system. You can list more than one, but you'll designate one as primary.

Taxonomy Codes for Doulas and Lactation Providers

There is no doula-specific taxonomy code. Here's what to use:

Code	Provider Type	Grouping	Who Uses It
174400000X	Specialist	Other Service Providers	Doulas, childbirth educators, and similar perinatal support providers
174N00000X	Lactation Consultant (Non-RN)	Other Service Providers	CLCs, IBCLCs without an RN license

Note on lactation: If you hold both an RN license and a lactation credential (IBCLC or CLC), your nursing license is your primary credential and taxonomy code — your lactation credential is listed as secondary.

What Are Billing Codes?

Billing codes are different from taxonomy codes. Where taxonomy describes who you are, billing codes describe what you did in a specific visit — and are used when submitting claims to insurance.

This is where things get state-dependent. As Medicaid doula coverage expands nationally, the codes in use are becoming more consistent, but they are not identical everywhere. Always verify with your specific payer before billing.

Procedure Codes (What You Billed For)

Code	Service	Notes
S9445	Patient education, non-physician provider, per session	Most widely used for doula visits; used by BCBSRI and many Medicaid plans
T1032	Doula services — prenatal/postpartum visits	Common in state Medicaid programs; billed per visit with a modifier
T1033	Doula services — labor and delivery	One per pregnancy/birth
S9443	Lactation classes, non-physician provider	Per session

Modifiers (How You Describe the Visit)

Modifiers are appended to procedure codes to tell the payer what kind of visit it was. Modifiers are state- and payer-defined, so the same modifier can mean different things in different programs. The table below reflects the most common doula-specific usage.

Modifier	What It Signals	Commonly Paired With
FP	Prenatal service	S9445 (BCBSRI)
TH	Postnatal/obstetrical service	S9445 (BCBSRI)
XU	Service distinct from main service (non-overlapping)	S9445 for labor & delivery (BCBSRI); some other payers
U7	Prenatal visit	T1032 (PA Medicaid and others)
U8	Postpartum visit	T1032 (PA Medicaid and others)
U9	Other services (loss, fertility, termination support)	T1032 — limited to 2/year in some states
HD	Non-physician provider/doula	T1033 and others; common in OR and some UHC plans
95	Audio-visual synchronous telehealth	Secondary modifier field

⚠️ Important: U7, U8, and U9 mean "prenatal," "postpartum," and "other doula services" in Pennsylvania Medicaid — but those same codes mean entirely different things in Ohio (behavioral health roles). Never assume modifiers transfer across states or payers.

Diagnosis Codes (What Was Going On)

Diagnosis codes tell the payer the clinical context for the visit. For doula services, these are the ones you'll use most:

Code	Description
Z32.2	Encounter for childbirth instruction — most commonly paired with doula claims
Z34.00–Z34.03	Normal first pregnancy, by trimester
Z34.80–Z34.93	Normal pregnancy (subsequent), by trimester
Z33.1	Pregnant state, incidental
O09.70–O09.93	Supervision of high-risk pregnancy
Z3A.xx	Weeks of gestation — add as a secondary code to specify gestational age

Place of Service Codes

Code	When to Use
11	Office visit
12	Home visit
22	Outpatient hospital
02	Telehealth — patient not at home
10	Telehealth — patient at home

Rhode Island Medicaid: What to Know

Rhode Island Medicaid covers doula services with a maximum reimbursement of $1,500 per pregnancy, structured as $100 per prenatal or postpartum visit (up to six visits) plus $900 for labor and delivery support. For specific billing codes and enrollment, contact EOHHS or your assigned Medicaid managed care plan directly, as RI Medicaid is administered through managed care organizations including Neighborhood Health Plan of RI (NHP).

Quick Reference Summary

What	Code
Doula taxonomy code	174400000X
Lactation taxonomy code (non-RN)	174N00000X
Most common doula visit procedure code	S9445 or T1032
Labor & delivery procedure code	T1033
Most common diagnosis code	Z32.2

A Note on What This Post Can and Can't Do

Billing codes, modifiers, and payer requirements change. This post reflects current guidance as of 2025–2026, but your specific payer — whether that's BCBSRI, NHP, Medicaid, TRICARE, or a private plan — may have requirements that differ from what's listed here. Always verify before submitting a claim, and when in doubt, call provider relations.

For the step-by-step guide to billing BCBSRI specifically as a Rhode Island doula, see Part 2 of this series.

This post is part of BirthPro's Business Basics series. Also in this series: How to Apply for Your NPI Number | CAQH for Doulas | Sole Proprietor vs. LLC | What Doulas Can Write Off