Home Denial Codes ABA31
Denial Code ABA31

Adaptive behavior assessment incomplete (Updated for 2026)

Adaptive behavior assessment incomplete

Quick Explanation

This denial indicates that the payer has rejected the claim because the adaptive behavior assessment, typically billed under behavior identification codes such as CPT 97151, was deemed incomplete or lacked the necessary supporting documentation. Payers issue this code when the clinical record fails to demonstrate that all components of the assessment, including face-to-face administration, caregiver interviews, and final report writing, were fully completed. Without a finalized, signed interpretive report detailing the assessment results and treatment plan, the service cannot be reimbursed.

Common Causes for ABA31

Denials with code ABA31 typically happen for the following specific reasons:

How to Prevent ABA31 Denials

To avoid receiving this denial in the future, implement these specific checks:

Appeal Letter Template for ABA31

If you believe this claim was denied incorrectly, you can use the following template to submit an appeal.

[Your Practice Header]
[Date]

[Payer Name]
[Appeals Department Address]

RE: Appeal for Claim [Claim Number]
Patient: [Patient Name]
ID: [Patient ID]
Date of Service: [Date]
Denial Code: ABA31 - Adaptive behavior assessment incomplete

Dear Appeals Department,

I am writing to appeal the denial of the above-referenced claim, which was denied with code ABA31: "Adaptive behavior assessment incomplete".

We are appealing the denial for code ABA31 (Adaptive behavior assessment incomplete) for services rendered. According to the American Medical Association (AMA) CPT coding guidelines for adaptive behavior assessments (specifically CPT 97151), this service encompasses both face-to-face assessment administration and the essential non-face-to-face time spent scoring, analyzing, and writing the final report. Attached, please find the comprehensive and fully executed adaptive behavior assessment report, which was completed, signed, and dated by a Qualified Healthcare Professional (QHP). This documentation includes all required components, such as standardized diagnostic protocol scores, direct clinical observations, caregiver interview summaries, and the resulting individualized treatment plan. Because the attached medical records clearly substantiate that the assessment was completed in its entirety and that all billed units represent actual time spent on these clinical activities, we respectfully request that this denial be overturned and the claim be processed for immediate payment.

Attached please find:
1. A copy of the original claim.
2. The relevant medical records supporting the service.
3. [Any other supporting documents].

We respectfully request that you reprocess this claim for payment.

Sincerely,

[Your Name]
[Title]
[Practice Name]
            

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