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ICD-10 Coding for Unspecified Intellectual Disability(F79)

Complete ICD-10-CM coding and documentation guide for Unspecified Intellectual Disability. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Intellectual Disability NOSMental Retardation Unspecified

Related ICD-10 Code Ranges

Complete code families applicable to Unspecified Intellectual Disability

F70-F79Primary Range

Intellectual Disabilities

This range includes all codes related to intellectual disabilities, with F79 specifically for unspecified cases.

Key Information: ICD-10 code for unspecified intellectual disability

Essential facts and insights about Unspecified Intellectual Disability

The ICD-10 code for unspecified intellectual disability is F79, used when adaptive functioning deficits exist without a valid IQ score.

Primary ICD-10-CM Code for intellectual disability unspecified

Unspecified Intellectual Disabilities
Billable Code

Decision Criteria

clinical Criteria

  • Presence of adaptive functioning deficits without a valid IQ score.

documentation Criteria

  • Document why IQ testing is unavailable or contraindicated.

Applicable To

  • Intellectual disability NOS
  • Mental retardation NOS

Excludes

  • Borderline intellectual functioning (R41.83)
  • Specific developmental disorders (F80-F89)

Clinical Validation Requirements

  • Adaptive functioning deficits in conceptual, social, and practical domains
  • Lack of valid IQ score due to barriers such as sensory impairments

Code-Specific Risks

  • Using F79 without documenting why specificity isn't possible
  • Failing to code known etiologies first

Coding Notes

  • Ensure documentation includes adaptive functioning assessments and reasons for unspecified coding.

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Borderline Intellectual Functioning

R41.83
Use for IQ scores between 70-84, not for intellectual disability.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Other Specified Intellectual Disabilities

F78
Use F78 when a specific etiology or severity level is documented.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Unspecified Intellectual Disability to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code F79.

Impact

Clinical: Inadequate assessment of patient needs., Regulatory: Non-compliance with documentation standards., Financial: Potential claim denials.

Mitigation Strategy

Use standardized assessment tools., Include detailed notes on adaptive functioning.

Impact

Reimbursement: May lead to claim denials if specificity is not justified., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate representation of patient condition.

Mitigation Strategy

Include detailed documentation on barriers to IQ testing and adaptive functioning assessments.

Impact

High risk of audit if unspecified codes are used without justification.

Mitigation Strategy

Provide clear documentation on why specificity is not possible.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Unspecified Intellectual Disability, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Unspecified Intellectual Disability

Use these documentation templates to ensure complete and accurate documentation for Unspecified Intellectual Disability. These templates include all required elements for proper coding and billing.

Child with sensory impairments preventing IQ testing

Specialty: Pediatrics

Required Elements

  • Adaptive functioning assessment
  • Reason for unspecified status
  • Comorbid conditions

Example Documentation

ASSESSMENT: F79 - Unspecified intellectual disability due to severe sensory impairments. PLAN: Continue occupational therapy for adaptive skills development.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient has unspecified intellectual disability.
Good Documentation Example
Patient exhibits deficits in adaptive functioning due to sensory impairments, preventing valid IQ testing.
Explanation
The good example provides specific reasons for the unspecified status and details on adaptive functioning.

Need help with ICD-10 coding for Unspecified Intellectual Disability? Ask your questions below.

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