SERI and NPI guidance documents - updated 11/29

Important update! On Nov. 16, BHT received an important update from HCA on taxonomy codes: HCA has received a notification from clearinghouses that they cannot accept the local taxonomy codes created by HCA. See this post for more information and next steps for providers. The NPI Enrollment Fact Sheet below has been revised to reflect this update.

There have been a number of questions about Service Encounter Reporting Instructions (SERI) and enrollment of National Provider Identifiers (NPI). The HCA has created guidance documents in response to these questions from providers, linked below. The documents include appropriate contact information for providers to send questions to the HCA.

Additionally, the HCA hosted a webinar on SERI/NPI Enrollment on Oct. 5. Slides and Q&A from that webinar are below. [Note: Due to technical issues, a recording of this webinar is not available.]

IMC SERI Fact Sheet 

2019 SERI Modifiers List 

updated 11/16: NPI Enrollment Fact Sheet

Step-by-Step NPI Enrollment Instructions

Taxonomy Codes List in Excel Format

Minutes vs. Units FAQ & Code List


SERI/NPI Webinar Slides

SERI/NPI Webinar Q&A

American Indian/Alaska Native (AI/AN) Fee-for-Service Checklist

American Indian/Alaska Native (AI/AN) Fee-for-Service FAQ

new! How to update an existing clinician enrollment in ProviderOne
1. Go into as either a file maintenance or super user.
2. Go under Provider.
3. Manage Provider Information.
4. Select Step 14 servicing providers.
5. Select the name of the servicing provider you want to update.
6. Will bring up to the steps for this provider.

 If you want to add a taxonomy select Step 3 and click on the add button and enter your taxonomy. Close out and go back to the steps and submit the last step to submit the modification.

 You would do the same process to update clinician’s information. If just changing information you could just click on what you need to update and change the information. You do not have to select add if the information is already there.  Make sure you do the last Step and submit the mod.

 You can also call 1 800-562-3022 Ext .16137 and we can help walk you thru the process.

Clarification on NPI Application for Non-Resident and US Resident Aliens
Non Resident and US Resident Aliens are eligible to apply for NPIs, but they must enroll using their IRS Individual Taxpayer Identification Number (ITIN) along with a photocopy of U.S. driver’s license, State issued ID, birth certificate or passport. See the NPPES Application form for more details.

Additional questions regarding applying for the NPI should be directed to the NPPES 1-800-465-3203 or

Where can I get more information?