2027 ICD-10-CM Diagnosis Code R48.1Agnosia

ICD-10-CM Codes›R00–R99›R47-R49›R48

ICD-10-CM R48.1
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

R48.1 is a billable ICD-10-CM diagnosis code for agnosia. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 886. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nervous system signs and symptoms.

Code Identity

ICD-10-CM Code
R48.1
Billable Status
Yes — Valid for Submission
Code Describes
Agnosia
Short Description
Agnosia
Same as the full description in the CMS dataset.
Parent Code
R48
Dyslexia and other symbolic dysfunctions, not elsewhere classified

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR47-R49Symptoms and signs involving speech and voice
CategoryR48Dyslexia and other symbolic dysfunctions, not elsewhere classified
This CodeR48.1Agnosia

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Agnosia
  • Agnosia for pain
  • Agnosia for smell
  • Agnosia for taste
  • Agnosia for temperature
  • Anosodiaphoria
  • Aphasia, agnosia, dyslexia AND/OR apraxia
  • Auditory agnosia
  • Autotopagnosia
  • Congenital auditory agnosia
  • Finger agnosia
  • Ideational agnosia
  • Organic disorder of body schema
  • Position agnosia
  • Sensory agnosia
  • Somatosensory agnosia
  • Tactile agnosia
  • Time agnosia

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to R48.1: its own notes plus those printed at R48 and Chapter 18. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Astereognosia (astereognosis)
  • Autotopagnosia

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

On R48.1 itself
  • visual object agnosia (R48.3)
From R48 Dyslexia and other symbolic dysfunctions, not elsewhere classified applies to 6 codes
  • specific developmental disorders of scholastic skills (F81.-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 18 (R00-R99) Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified applies to 774 codes
  • 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)

Notes

General instructions on how these codes are used.

From Chapter 18 (R00-R99) Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified applies to 774 codes
  • 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.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SYM010
Nervous system signs and symptoms
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Agnosia

    loss of the ability to comprehend the meaning or recognize the importance of various forms of stimulation that cannot be attributed to impairment of a primary sensory modality. tactile agnosia is characterized by an inability to perceive the shape and nature of an object by touch alone, despite unimpaired sensation to light touch, position, and other primary sensory modalities.

Patient EducationClinical

Mental Disorders

Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may happen over a short period of time or come and go. Some can be chronic (long-lasting). They can affect your ability to relate to others and function each day..

The full article covers:

  • What are mental disorders?
  • What are some types of mental disorders?
  • What causes mental disorders?
  • Who is at risk for mental disorders?
  • How are mental disorders diagnosed?
  • What are the treatments for mental disorders?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert R48.1 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
784.69 Symbolic dysfunction NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About R48.1Overview

What is the ICD-10 code for agnosia?

The ICD-10-CM code for agnosia is R48.1 (sometimes written as R481). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is R48.1 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report agnosia on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does R48.1 group to?

When agnosia is the principal diagnosis on an inpatient stay, it groups to MS-DRG 886 (behavioral and Developmental Disorders), which carries a relative weight of 1.6455. Higher weights mean higher Medicare reimbursement.

Can R48.1 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the agnosia is established, that condition takes the principal position instead.

Can R48.1 be reported with R48.3?

Not as a rule. The Excludes1 note on R48.1 lists "visual object agnosia (R48.3)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).