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ICD Hub / Mental, behavioural or neurodevelopmental disorders (F01–F99) / 6A00.1 - Disorder of intellectual development, moderate
ICD-11

ICD-11 Codes
for 6A00.1 - Disorder of intellectual development, moderate
Teodor Jurukovski January 1, 1970
Fact checked by: Teodor Jurukovski
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Understanding Moderate Disorder of Intellectual Development

Disorder of intellectual development, moderate (ICD-11 code: 6A00.1) is a condition that originates during the developmental period. It is characterised by significantly below-average intellectual functioning and adaptive behaviour. These impairments are typically measured as being approximately three to four standard deviations below the mean. This diagnosis falls under the broader category of Disorders of intellectual development (6A00) within the ICD-11 classification system.

Key Characteristics of Moderate Intellectual Development Disorder

Individuals with a moderate disorder of intellectual development often experience limitations in their language abilities and capacity for acquiring academic skills. These skills are generally basic. While some individuals may master fundamental self-care, domestic, and practical activities, most require considerable and consistent support to achieve independent living and employment as adults. The diagnosis is based on appropriately normed, individually administered standardized tests or comparable behavioural indicators when such testing is not feasible.

Potential Causes and Contributing Factors

Disorders of intellectual development are a group of conditions with diverse aetiologies. Potential causes and contributing factors can arise during the prenatal period, such as genetic conditions or maternal infections, or during birth, including complications leading to oxygen deprivation. Postnatal factors, such as severe head injuries, certain childhood infections like meningitis, or prolonged exposure to toxins, can also contribute to the development of intellectual functioning impairments.

How Moderate Intellectual Development Disorder is Diagnosed

The diagnosis of Disorder of intellectual development, moderate (6A00.1) is established through comprehensive assessments. This typically involves appropriately normed, individually administered standardized tests to evaluate intellectual functioning and adaptive behaviour. The criteria specify performance approximately three to four standard deviations below the mean. In situations where standardized testing is not available or feasible, clinical judgment based on a thorough assessment of comparable behavioural indicators is used to support the diagnosis.

Support and Management Approaches

Management for moderate disorder of intellectual development focuses on providing comprehensive support tailored to the individual's needs. This often includes educational interventions designed to develop basic academic and life skills, vocational training, and support services to foster independence. Consistent support in daily living, social integration, and employment is crucial for affected individuals to achieve their potential. Therapies, such as speech and language therapy or occupational therapy, may also be beneficial.

ICD-11 Coding for Disorder of Intellectual Development, Moderate

The official ICD-11 code for this condition is **6A00.1**. This code represents **Disorder of intellectual development, moderate**. Common clinical synonyms include moderate mental handicap. Patient-friendly terms may encompass learning disability or developmental challenges. This specific code is used for accurate medical billing and documentation, ensuring precise reporting of the diagnosis. When documenting, healthcare professionals should ensure the assessment aligns with the ICD-11 criteria for moderate intellectual functioning and adaptive behaviour deficits. This code is reportable and billable under appropriate clinical circumstances.

Frequently asked questions

What is the ICD-11 classification for a moderate disorder of intellectual development?
In ICD-11, a moderate disorder of intellectual development is classified under the code 6A00.1. It is defined as a condition originating during the developmental period, characterized by significantly below-average intellectual functioning and adaptive behavior, approximately three to four standard deviations below the mean (0.003–0.1 percentile).
What are the typical characteristics of language and academic skills for individuals with a moderate disorder of intellectual development according to ICD-11?
According to ICD-11, individuals with a moderate disorder of intellectual development generally have language and capacity for acquisition of academic skills that are limited to basic skills. Some may master basic self-care, domestic, and practical activities.
What level of support is generally indicated for individuals with a moderate disorder of intellectual development in ICD-11?
ICD-11 indicates that most individuals with a moderate disorder of intellectual development require considerable and consistent support to achieve independent living and employment as adults.
How is the severity of intellectual development disorders specified in ICD-11?
ICD-11 specifies the severity of intellectual development disorders using distinct codes. For example, 6A00.1 is designated for a moderate disorder of intellectual development, differentiating it from mild (6A00.0), severe (6A00.2), and profound (6A00.3) levels.
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