ICD-10-CM 2027
ICD-10 code for Imbecile
From the official ICD-10-CM alphabetic index entry “Imbecile, imbecility (I.Q.35-49)”. Page updated September 29, 2026.
About coding Imbecile
The ICD-10-CM code for Imbecile is F71 (Moderate intellectual disabilities).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 884 (Organic Disturbances and Intellectual Disability, relative weight 1.6001), in MDC 19 (Mental Diseases and Disorders), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Common questions about Imbecile ICD-10 codes
What is the ICD-10 code for Imbecile?
- F71 — Moderate intellectual disabilities.
Is F71 billable?
- Yes. F71 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can F71 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict F71 as a principal diagnosis.
Is F71 a CC or MCC?
- No. F71 is neither a CC nor an MCC under MS-DRG v44.0.