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The Home Infusion EDI Coalition (HIEC) Resource Center

Working to Achieve Nationally Standardized, Sensible Electronic Claiming and Coding for Home Infusion

NHIA Releases 2019 National Coding Standard - learn more.

Standardized electronic claiming and coding for home infusion is one of NHIA's top priorities and our hard work on this important issue brought about a significant victory in 2001 when the federal government's HCPCS administrators published national standardized coding for home infusion therapy services effective in January of 2002. Since then, the HCPCS per diem S-code system has been widely adopted by commercial payers and some government payers throughout the nation. These codes are compliant with federal Health Insurance Portability and Accountability Act (HIPAA) regulations that mandate that all public and private payers use "approved" standardized coding for all of their health care transactions.

To help payers and providers of home infusion services comply with these requirements, in January 2002 NHIA released its first version of the educational resource, the NHIA National Coding Standard for Home Infusion Claims Under HIPAA. NHIA updates the National Coding Standard to maintain currency with changes in the national code sets. Obtain the latest version of it below.

Download Latest NHIA National Coding Standard, v1.11.01g (free, registration required)

About NHIA's Quick Coding Reference for Home Infusion Therapy

The NHIA Model Contract Addenda

Change your registration information (if you're already registered) Especially important is providing email address changes so NHIA may notify you of new versions of the National Coding Standard.

Submit new code recommendations to NHIA (Please read the National Coding Standard prior to submitting your question or request.)

Summit questions and comments on coding and claiming to NHIA (Please read the National Coding Standard prior to submitting your question or request.)

Tools & Resources

What is a Per Diem?  The NHIA National Definition of Per Diem

HIEC/HIPAA News on Electronic Transactions, Claiming and Coding; E-Rx, Conversion to ICD-10 Coding, and More membersonly

Frequently Asked Questions

Full Text HIPAA Regulations

ASC X12 Standard Interpretations

CMS Resources for Conversion to X12N 5010 and NCPDP D.0 Transactions: Versions 5010 & D.0 & 3.0 and Electronic Billing and EDI Transactions

CMS Resources for Conversion from ICD-9 to ICD-10 Coding.

Translator Between ICD-9 and ICD-10 Codes (from American Academy of Professional Coders)