R41.83 – Borderline intellectual functioning

ICD-10-CM 2027 diagnosis code · Symptoms and signs involving cognition, perception, emotional state and behavior

Billable code

ICD-10-CM code R41.83

Code: R41.83 (claims format: R4183)
Description: Borderline intellectual functioning
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 18. Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
Block: R40-R46 Symptoms and signs involving cognition, perception, emotional state and behavior
Parent codes: R41 › R41.8

Notes for R41.83

Applicable to:

IQ level 71 to 84

Excludes1 (not coded here):

intellectual disabilities (F70-F79)

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

R41 – Other symptoms and signs involving cognitive functions and awareness

Excludes1 (not coded here):

dissociative [conversion] disorders (F44.-)
mild cognitive impairment of uncertain or unknown etiology (G31.84)

Block R40-R46

Excludes2 (not included here):

symptoms and signs constituting part of a pattern of mental disorder (F01-F99)

Index terms for R41.83

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in R41.8

R41.81 – Age-related cognitive declineBillable
R41.82 – Altered mental status, unspecifiedBillable
R41.84 – Other specified cognitive deficitHeader
R41.85 – AnosognosiaBillable
R41.89 – Other symptoms and signs involving cognitive functions and awarenessBillable

Frequently asked questions

What is ICD-10 code R41.83?

R41.83 is the ICD-10-CM code for borderline intellectual functioning, in the block R40-R46 (Symptoms and signs involving cognition, perception, emotional state and behavior).

Is R41.83 a billable code?

Yes. R41.83 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does R41.83 belong to?

It belongs to category R41 – Other symptoms and signs involving cognitive functions and awareness.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.