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R41.83

R41.83Borderline intellectual functioning

Billable / specific codeICD-10-CM

R41.83 is a billable, specific ICD-10-CM code for borderline intellectual functioning. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • intellectual disabilities (F70-F79)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • IQ level 71 to 84

Risk adjustment

R41.83 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

R41.83 is named in 2 Medicare coverage policies 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A57130Billing and Coding: Psychiatric Codes
  • A59186Billing and Coding: Magnesium

How R41.83 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to R41.83.

  • Functioning, intellectual, borderline
  • Symptoms NECinvolvingawarenessborderline intellectual functioning
  • Symptoms NECinvolvingcognitive functionsborderline intellectual functioning

Related codes at this level

Codes that share R41.8. If R41.83 is not quite right, the correct code is usually one of these.

Questions about R41.83

Is R41.83 a billable ICD-10-CM code?
Yes. R41.83 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does R41.83 sit in the tabular list?
Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block Symptoms and signs involving cognition, perception, emotional state and behavior (R40-R46).
What cannot be coded together with R41.83?
R41.83 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.