M59 | Incomplete claim

Industry

Insurance

Canonical

/insurance/healthcare/error-codes/m59/

Last Updated

Feb 25, 2026

Summary

This code indicates that the Medicare claim was incomplete and could not be fully processed.

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Use these links to pivot between the directory, a focused guide, and nearby related codes.

Hub

Guides

The Complete Insurance Claim Denial Codes Directory (2026 Edition)

Related Codes

What This Code Means

M59 is applied when required claim components are missing or incomplete. CMS cannot adjudicate incomplete claims. This is an administrative issue rather than a coverage decision. Once the missing elements are addressed, the claim may be eligible for reprocessing.

Where Users Usually See This Code

Medicare remittance advice
Claim rejection notices
CMS claim processing reports

Why This Code Appears

Missing claim data elements
Incomplete service or provider details
Submission errors

What Typically Happens Next

Claim processing stops
Reprocessing may be required
Payment is delayed

What This Code Is Not

It is not a non-covered service
It is not patient responsibility
It is not a contractual adjustment

Troubleshooting Checklist

□ Review claim completeness
□ Verify required data fields
□ Monitor resubmission guidelines

Notes And Edge Cases

Incomplete claims are common during system transitions. CMS-specific rules affect completeness criteria.

Related Codes

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