BCDA V3 - Clarification on Item-Level serviceDate Value in ExplanationOfBenefit Resource

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Ashvani goyal

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Jul 17, 2026, 10:10:53 AM (10 days ago) Jul 17
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Hello BCDA Team,

While processing BCDA V3 ExplanationOfBenefit resources, we observed that the item-level serviceDate is populated with the value 0999-12-27 for some claims.

  For example:  

{
  "sequence": 2,
  "serviceDate": "0999-12-27"
}

Could you please clarify the following?

  • Is 0999-12-27 an expected value for the item-level serviceDate in BCDA V3?
  • If so, what does this date represent?
  • If not, is this a known issue or an invalid/default placeholder value that should be ignored during processing?

If needed, we can also provide the corresponding ExplanationOfBenefit ID and sample JSON to help with the investigation.

Thank you for your assistance.

Best regards,
Ashvani Goyal



Beneficiary Claims Data API (BCDA) Community

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Jul 21, 2026, 9:41:25 AM (6 days ago) Jul 21
to Beneficiary Claims Data API (BCDA) Community

Hi Ashvani,


Thank you for the question about serviceDates in v3. We're reviewing the information you shared with our upstream data provider for how to interpret a serviceDate of 0999-12-27.


Thanks,

The BCDA Team

Beneficiary Claims Data API (BCDA) Community

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Jul 21, 2026, 1:50:09 PM (6 days ago) Jul 21
to Beneficiary Claims Data API (BCDA) Community

Hi Ashvani,


We have reached out directly via email to collect more information. Please let us know if you have not received an email from bc...@cms.hhs.gov


The BCDA Team

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