Intellectual and Developmental Disability

Welcome and thank you for taking the time to explore Intellectual and Developmental Disabilities (IDD) services! IDD services, also known as Rule 185 Case Management, support to help you identify and achieve the things you want to do.

Rule 185 Case Management is specialized to support people with intellectual or developmental disabilities and/or related conditions in gaining access to needed social, medical, educational and other supports and services. The case manager works on your behalf to identify your outcomes, dreams, and needs by assuring the continuity of services and supports.

What is an intellectual or developmental disability?

  • Substantial functional limitations:  long term inability to significantly perform an activity or task.
  • Significantly sub-average intellectual functioning:  full scale IQ score of 70 or less, based on assessment that includes 1 or more individually administered standardized intelligence tests developed for the purpose of assessing intellectual functioning.

Substantial functional limitations and significantly sub-average intellectual functioning exists concurrently with demonstrated deficits in adaptive behavior.

  • Deficits in adaptive behavior: significant limitation in a person’s effectiveness in meeting the standards of maturation, personal independence and social responsibility expected for the person’s age level and cultural group, as determined by clinical assessment and, generally, standardized scales.
  • All conditions are manifested before the person’s 22nd birthday.

People that meet this criteria have a diagnosis of Mild, Moderate, Severe, or Profound Intellectual or Developmental Disability.  

Questions we ask when we are determining if someone is eligible for IDD Services:

  • Is the IQ score 70 or below? 
  • Was the condition present prior to the person’s 22nd birthday? If no…
  • Is there another condition is present? If so, we then determine if there is a related condition…

What is a related condition?

If you have an IQ that is greater than 70, you may still be eligible for IDD services with a related condition. A related condition is a diagnosis of severe, chronic disability that meets all of the following conditions: 

  1. Is found to be closely related to developmental disability because the condition results in impairment of general intellectual functioning or adaptive behavior similar to that of a person with IDD and requires treatment or services similar to those required for persons with IDD.
  2. Is manifested before the person reaches 22 years of age.
  3. Is likely to continue indefinitely.
  4. Results in substantial functional limitations in three or more of the following areas of major life activity:
    • Self-care
    • Understanding and use of language
    • Learning
    • Mobility
    • Self-direction
    • Capacity for Independent Living

Common related conditions diagnoses include, but are not limited to: Autism Spectrum Disorder, Cerebral Palsy, Seizure Disorder, Prader-Willi Syndrome, Pervasive Developmental Disorder (PDD), or Fetal Alcohol Spectrum Disorder (FASD).