1. ICD-10-CM Codes
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2. R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
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3. R47-R49 Symptoms and signs involving speech and voice
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4. R48- Dyslexia and other symbolic dysfunctions, not elsewhere classified
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2020 ICD-10-CM Diagnosis Code R48.8

Other symbolic dysfunctions

2016 2017 2018 2019 2020 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 2020 edition of ICD-10-CM R48.8 became effective on October 1, 2019.
• This is the American ICD-10-CM version of R48.8 - other international versions of ICD-10 R48.8 may differ.

• Acalculia
• Agraphia
• Aphasia, angular gyrus syndrome
• Aphasia-angular gyrus syndrome
• Gerstmanns syndrome

• 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)

• 886 Behavioral and developmental disorders

Convert R48.8 to ICD-9-CM

• 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

• Type 1 Excludes: F81.2
  ICD-10-CM Diagnosis Code F81.2

  Mathematics disorder

  2016 2017 2018 2019 2020 Billable/Specific Code

  Applicable To

  • Developmental acalculia
  • Developmental arithmetical disorder
  • Developmental Gerstmann's syndrome
  • Specific learning disorder, with impairment in mathematics

  Type 1 Excludes

  • acalculia NOS (R48.8)

  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)

• 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 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 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 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 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 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 Billable/Specific Code

  Applicable To

  • 'Backward reading'
  • Developmental dyslexia
  • Specific learning disorder, with impairment in reading
  • Specific reading retardation

  Type 1 Excludes

  • alexia NOS (R48.0)
  • dyslexia NOS (R48.0)
  • secondary to organic lesion R48.8

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