UB04 Reference

UB04 PPS Code Code 04: RUG (Resource Utilization Group)

Overview

The provided source is a UB‑04 Hospital Billing Instructions document from the Maryland Department of Health Medical Assistance (Medicaid), revised May 2025. [1] The excerpt includes a table of contents and introductory material but does not contain any definition, usage guidance, or reference to PPS Code 04 (RUG – Resource Utilization Group). [1] Because the source text lacks substantive information about this code, no claims about its meaning, application, or context can be traced to the provided document.

When to Use

The source document does not specify when PPS Code 04 (RUG) should be used on a UB‑04 claim. [1] The excerpt covers form locators FL 01 through FL 28 but does not address PPS codes or the RUG system. [1] Therefore, based solely on the provided source, there is no information to determine appropriate use cases for this code.

Step‑by‑Step Claim Example

No step‑by‑step claim example involving PPS Code 04 (RUG) can be constructed from the source text. [1] The document does not include any sample claims, field‑by‑field instructions for PPS codes, or references to RUG‑based billing. [1] Without such details, a valid example cannot be provided.

Common Mistakes & Audit Red Flags

The source text offers no discussion of common mistakes or audit red flags related to PPS Code 04 (RUG). [1] The excerpt focuses on form locator descriptions and general billing instructions, but does not address error patterns or compliance risks for this specific code. [1] Consequently, no audit red flags can be identified from the provided material.

Related Codes/Fields

The source document does not list any related codes or fields for PPS Code 04 (RUG). [1] The table of contents mentions form locators such as FL 04 (Type of Bill), FL 12 (Admission Date), and FL 14 (Priority of Visit), but none are explicitly linked to RUG or PPS code 04. [1] Therefore, a table of related codes/fields cannot be populated using only the provided source.

Related Code/Field Description (from source)
No information available The source does not provide any related codes or fields for PPS Code 04. [1]

References

[1] Maryland Medicaid (Code 04) — https://health.maryland.gov/mmcp/provider/Documents/ffs-billing/UB04-Hospital-Billing-Instructions%20%281%29.pdf

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This guide was developed using official CMS and NUBC guidelines, combined with patterns observed from processing thousands of real UB-04 documents through our system.

Last Updated: 2026-06-03

Sources: CMS Pub. 100-04 Chapter 25, NUBC Official UB-04 Manual, Medicare Contractor Bulletins (Noridian, Palmetto, CGS)