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What is Borderline intellectual functioning and explain in detail?
Borderline intellectual functioning, also called borderline mental retardation (in the ICD-8), is a categorization of intelligence wherein a person has below average cognitive ability (generally an IQ of 70–85), but the deficit is not as severe as intellectual disability (below 70). It is sometimes called below average IQ (BAIQ). This is technically a cognitive impairment; however, this group may not be sufficiently mentally disabled to be eligible for specialized services.

Codes
The DSM-IV-TR code of borderline intellectual functioning is V62.89. DSM-5 diagnosis codes are V62.89 and R41.83.

Learning skills
During school years, individuals with borderline intellectual functioning are often "slow learners"