Glossary Term

NPI Number in Medical Billing: Definition and Enrollment

The NPI is a 10-digit unique identifier required on all medical claims. Learn about Type 1 vs. Type 2 NPIs, how to enroll, and NPI requirements in billing.

Quick Summary

NPI Number at a Glance

The National Provider Identifier (NPI) is the 10-digit unique identifier assigned to healthcare providers for use in all HIPAA transactions, required on every claim submission.

  • Obtaining and maintaining an accurate NPI is part of the provider credentialing and payer enrollment process.
  • Return to the full medical billing glossary for related terms.
NPI-NUMBER · Glossary Term

NPI-NUMBER in Detail

What does NPI-NUMBER cover in detail?

The National Provider Identifier (NPI) is the 10-digit unique identifier assigned to healthcare providers for use in all HIPAA transactions, required on every claim submission.

Obtaining and maintaining an accurate NPI is part of the provider credentialing and payer enrollment process. Return to the full medical billing glossary for related terms.

national provider identifier NPINPI enrollment billingtype 1 type 2 NPI
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NPI Number in Medical Billing: Definition and Enrollment

Using NPI-NUMBER Correctly

How do I use NPI-NUMBER correctly?

Definition in Practice

The NPI is a 10-digit unique identifier required on all medical claims. Learn about Type 1 vs. Type 2 NPIs, how to enroll, and NPI requirements in billing.

Billing Impact

This concept directly affects how claims are prepared, submitted, and adjudicated. Errors related to this term are a common source of denials.

Documentation Relevance

Clinical documentation accuracy related to this concept determines whether claims are paid, reduced, or denied on the first submission.

Related Concepts

Understanding this term builds a foundation for understanding the broader revenue cycle. Review related terms and processes to build comprehensive knowledge.

NPI-NUMBER, Frequently Asked Questions

The National Provider Identifier (NPI) is the 10-digit unique identifier assigned to healthcare providers for use in all HIPAA transactions, required on every claim submission.

Obtaining and maintaining an accurate NPI is part of the provider credentialing and payer enrollment process. Return to the full medical billing glossary for related terms.

Back to the list of questions

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