UB04 Reference

UB04 Condition Codes Code 17: Patient is Homeless

Overview

Condition code 17 is defined as “Patient is homeless” in the Noridian Condition Codes list for Medicare Part A jurisdiction [1]. This code is used on the UB‑04 claim form, which is the standard institutional claim form for acute inpatient hospitals, acute outpatient hospitals, and other facilities that submit paper claims to payers such as MassHealth [2]. Condition codes provide additional information about the patient’s circumstances that may affect payment, coverage, or coordination of benefits. The Noridian list includes 17 as one of many codes that communicate special situations to claims processors, and the MassHealth UB‑04 billing guide references “Code Sets for the UB‑04 Claim Form” as a component of the claim submission process [2]. Accurate use of this code ensures that the patient’s living situation is documented for appropriate billing and case management.

When to Use

Use condition code 17 when the patient is homeless, as stated in the Noridian condition code mapping [1]. Homelessness typically means the patient lacks a fixed, regular, and adequate nighttime residence. The code alerts payers that the patient’s living situation may require special billing considerations, such as alternative discharge planning or coordination with social services. The Noridian list is published by a Medicare contractor, indicating that this code is recognized by Medicare Part A for institutional claims [1]. The MassHealth UB‑04 guide confirms that condition codes are part of the code sets used on the UB‑04 form, though the guide does not list individual codes [2]. Providers should apply code 17 only when the patient’s record verifies homelessness, as payers may request documentation to support the code.

Step‑by‑Step Claim Example

A patient is admitted to an acute inpatient hospital for treatment of a fracture and reports having no permanent address—the patient is currently staying in a homeless shelter. The hospital biller prepares a UB‑04 claim. In the condition code fields (fields 18–28, as standard on the UB‑04 form described in the MassHealth guide), the biller enters “17” to indicate that the patient is homeless [1]. The biller then completes other required fields such as patient demographics, admission date, revenue codes, and diagnosis codes. The claim is submitted to the appropriate payer. The presence of code 17 may trigger specific payer protocols, such as assigning a special mailing address for the remittance advice or indicating that the patient qualifies for certain benefit adjustments. The MassHealth guide emphasizes that accurate completion of the UB‑04 form, including code sets, is necessary for timely claim processing [2].

Common Mistakes & Audit Red Flags

A frequent mistake is failing to report condition code 17 when the patient is homeless, which can lead to claim denials or incorrect payment [1] (the code is specifically intended to communicate this circumstance). Auditors may flag claims that lack an appropriate condition code for a homeless patient, because the payer may need the information to apply correct billing rules. Another error is using code 17 for a patient who is not homeless, which could be considered misrepresentation. Providers should document the patient’s living situation in the medical record to support the code. The MassHealth guide notes that improper claim completion can result in payment delays [2]. Additionally, omitting the code when a patient meets the definition may cause the claim to be processed incorrectly, leading to audit flags or recoupment.

Related Codes/Fields

The condition code field on the UB‑04 (fields 18–28) can accommodate multiple codes. Below is a table of related condition codes from the Noridian list that may intersect with homelessness or similar living‑situation circumstances [1].

Code Description Relevance
17 Patient is homeless Primary code for homelessness
18 Maiden name retained Demographic identifier
25 Patient is a non‑U.S. resident Living situation indicator
26 VA eligible patient chooses services in Medicare facility Coordination with other benefits
31 Patient is a student (full time day) Student living arrangement
32 Patient is a student (cooperative/work study program) Student living arrangement
33 Patient is a student (full‑time night) Student living arrangement
34 Patient is student (part‑time) Student living arrangement

These codes are all taken directly from the Noridian source [1]. The field location (18–28) is standard for condition codes on the UB‑04 form, as referenced in the general instructions of the MassHealth UB‑04 billing guide [2].


References

[1] Noridian — https://med.noridianmedicare.com/web/jea/topics/claim-submission/condition-codes

[2] MassHealth — https://www.mass.gov/doc/ub-04-billing-guide-0/download

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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: 2026-05-29

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