2022

  1. ICD-10-CM Codes
    2. ›
  2. R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
    3. ›
  3. R47-R49 Symptoms and signs involving speech and voice
    4. ›
  4. R48- Dyslexia and other symbolic dysfunctions, not elsewhere classified
    5. ›
  5. 2022 ICD-10-CM Diagnosis Code R48.8

2022 ICD-10-CM Diagnosis Code R48.8

Other symbolic dysfunctions

    2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
  • R48.8 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2022 edition of ICD-10-CM R48.8 became effective on October 1, 2021.
  • This is the American ICD-10-CM version of R48.8 - other international versions of ICD-10 R48.8 may differ.
Applicable To
  • Acalculia
  • Agraphia
The following code(s) above R48.8 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to R48.8:
  • R00-R99
    2022 ICD-10-CM Range R00-R99

    Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified

    Note
    • This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
    • Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
    • The conditions and signs or symptoms included in categories R00-R94 consist of:
    • (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
    • (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
    • (c) provisional diagnosis in a patient who failed to return for further investigation or care;
    • (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
    • (e) cases in which a more precise diagnosis was not available for any other reason;
    • (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.
    Type 2 Excludes
    • abnormal findings on antenatal screening of mother (O28.-)
    • certain conditions originating in the perinatal period (P04-P96)
    • signs and symptoms classified in the body system chapters
    • signs and symptoms of breast (N63, N64.5)
    Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
  • R48
    ICD-10-CM Diagnosis Code R48

    Dyslexia and other symbolic dysfunctions, not elsewhere classified

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • specific developmental disorders of scholastic skills (F81.-)
    Dyslexia and other symbolic dysfunctions, not elsewhere classified
Approximate Synonyms
  • Acalculia
  • Agraphia
  • Aphasia, angular gyrus syndrome
  • Aphasia-angular gyrus syndrome
  • Gerstmanns syndrome
Clinical Information
  • A wide group of related learning disorders characterized by difficulties with mathematics and manipulating numbers; the difficulty with math may be caused or exacerbated by visuo-spatial or language processing difficulties.
  • Form of aphasia involving impaired ability to perform simple arithmetic calculations.
  • Impaired ability in numerical concepts. These inabilities arise as a result of primary neurological lesion, are syndromic (e.g., gerstmann syndrome ) or acquired due to brain damage.
  • Inability to write (letters, syllables, words, or phrases) due to an injury to a specific cerebral area or occasionally due to emotional factors.
  • Loss or impairment of the ability to write (letters, syllables, words, or phrases) due to an injury to a specific cerebral area or occasionally due to emotional factors. This condition rarely occurs in isolation, and often accompanies aphasia. (from Adams et al., Principles of Neurology, 6th ed, p485; apa, thesaurus of psychological index terms, 1994)
ICD-10-CM R48.8 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):
  • 886 Behavioral and developmental disorders

Convert R48.8 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
Code annotations containing back-references to R48.8:
  • Type 1 Excludes: F81.2
    ICD-10-CM Diagnosis Code F81.2

    Mathematics disorder

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Applicable To
    • Developmental acalculia
    • Developmental arithmetical disorder
    • Developmental Gerstmann's syndrome
    • Specific learning disorder, with impairment in mathematics
    Type 1 Excludes
    Type 2 Excludes
    • arithmetical difficulties associated with a reading disorder (F81.0)
    • arithmetical difficulties associated with a spelling disorder (F81.81)
    • arithmetical difficulties due to inadequate teaching (Z55.8)

Diagnosis Index entries containing back-references to R48.8:
  • Abolition, language R48.8
  • Acalculia R48.8
  • Agrammatism R48.8
  • Agraphia (absolute) R48.8
  • Amimia R48.8
  • Amnesia R41.3
    ICD-10-CM Diagnosis Code R41.3

    Other amnesia

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Applicable To
    • Amnesia NOS
    • Memory loss NOS
    Type 1 Excludes
    • amnestic disorder due to known physiologic condition (F04)
    • amnestic syndrome due to psychoactive substance use (F10-F19 with 5th character .6)
    • mild memory disturbance due to known physiological condition (F06.8)
    • transient global amnesia (G45.4)
    • auditory R48.8
  • Amusia R48.8
  • Anomia R48.8
  • Asymbolia R48.8
  • Bianchi's syndrome R48.8
  • Blindness (acquired) (congenital) (both eyes) H54.0X-
    ICD-10-CM Diagnosis Code H54.0X-

    Blindness, both eyes, different category levels

      2018 - New Code 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    • mind R48.8
    • psychic R48.8
  • Deafness (acquired) (complete) (hereditary) (partial) H91.9-
    ICD-10-CM Diagnosis Code H91.9-

    Unspecified hearing loss

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Applicable To
    • Deafness NOS
    • High frequency deafness
    • Low frequency deafness
    • mental R48.8
  • Disorder (of) - see also Disease
    • learning (specific) F81.9
      ICD-10-CM Diagnosis Code F81.9

      Developmental disorder of scholastic skills, unspecified

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      Applicable To
      • Knowledge acquisition disability NOS
      • Learning disability NOS
      • Learning disorder NOS
      • acalculia R48.8
  • Dyscalculia R48.8
  • Dysfunction
    • symbolic R48.9
      ICD-10-CM Diagnosis Code R48.9

      Unspecified symbolic dysfunctions

        2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
      • specified type NEC R48.8
  • Echolalia R48.8
  • Gerstmann's syndrome R48.8
  • Palilalia R48.8
  • Perseveration R48.8 (tonic)
  • Strephosymbolia F81.0
    ICD-10-CM Diagnosis Code F81.0

    Specific reading disorder

      2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
    Applicable To
    • 'Backward reading'
    • Developmental dyslexia
    • Specific learning disorder, with impairment in reading
    • Specific reading retardation
    Type 1 Excludes
    • secondary to organic lesion R48.8

ICD-10-CM Codes Adjacent To R48.8
R47.8 Other speech disturbances
R47.81 Slurred speech
R47.82 Fluency disorder in conditions classified elsewhere
R47.89 Other speech disturbances
R47.9 Unspecified speech disturbances
R48 Dyslexia and other symbolic dysfunctions, not elsewhere classified
R48.0 Dyslexia and alexia
R48.1 Agnosia
R48.2 Apraxia
R48.3 Visual agnosia
R48.8 Other symbolic dysfunctions
R48.9 Unspecified symbolic dysfunctions
R49 Voice and resonance disorders
R49.0 Dysphonia
R49.1 Aphonia
R49.2 Hypernasality and hyponasality
R49.21 Hypernasality
R49.22 Hyponasality
R49.8 Other voice and resonance disorders
R49.9 Unspecified voice and resonance disorder
R50 Fever of other and unknown origin

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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