ICD-10-CM Tabular Index · Chapter 5 · FY 2027 F70–F79
Intellectual disabilities (F70-F79) ICD-10-CM
The F70–F79 section covers intellectual disabilities with 9 ICD-10-CM diagnosis codes, of which 7 are billable in fiscal year 2027. The section is organized into the 6 code ranges listed below.
✓ Built from the official CMS FY 2027 datasetEffective Oct 1, 2026 – Sep 30, 2027
6
Code Ranges
9
Diagnosis Codes
7
Billable Codes
F70–F79
Code Range
Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
any associated physical or developmental disorders
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
borderline intellectual functioning, IQ above 70 to 84 R41.83
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About the F70–F79 Code Range
Intellectual disabilities are grouped by named severity, with separate categories for other and unspecified forms.
F70 is mild, F71 is moderate, F72 is severe, and F73 is profound. F78 covers other intellectual disabilities and includes a subdivision for other genetic-related intellectual disabilities. F79 is unspecified intellectual disabilities.
Questions About This Page
How many codes are in the F70-F79 range?
The F70-F79 range contains 9 ICD-10-CM diagnosis codes in FY 2027. 7 of them are billable, and the rest are category headers that organize the section.
What conditions does F70-F79 cover?
The range covers intellectual disabilities. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
