R41.83 — Borderline intellectual functioning
Is R41.83 billable?
Yes — R41.83 is billable for FY2027. R41.83 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. R41.83 may be submitted for encounters from October 1, 2026 through September 30, 2027.
R41.83 at a glance
| Code | R41.83 |
|---|---|
| Description | Borderline intellectual functioning |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to R41.83?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name R41.83 directly.
CMS will reject this code as the principal diagnosis on an inpatient claim. It describes something other than the condition chiefly responsible for the admission.
Which MS-DRGs does R41.83 group to?
R41.83 sits in MDC 23 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 951Other Factors Influencing Health Statusmedical
How is R41.83 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to R41.83. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Functioning, intellectual, borderline
- Symptoms NEC › involving › awareness › borderline intellectual functioning
- Symptoms NEC › involving › cognitive functions › borderline intellectual functioning
Excludes1 — never code together
The conditions below can never be reported together with R41.83 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- intellectual disabilities (F70-F79)
Inclusion terms
Alternative wording in documentation that is classified to R41.83.
- IQ level 71 to 84
Excludes1 — never code together — inherited from R41
The conditions below can never be reported together with R41.83 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from Chapter 18
The conditions below are not part of R41.83, but a patient may have both at the same time. When documentation supports it, R41.83 and the excluded code may both be reported.
Excludes2 — not included here — inherited from R40-R46
The conditions below are not part of R41.83, but a patient may have both at the same time. When documentation supports it, R41.83 and the excluded code may both be reported.
- symptoms and signs constituting part of a pattern of mental disorder (F01-F99)
How long has R41.83 existed?
R41.83 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.