R48.1 - Agnosia

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis 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
• Position agnosia
• Sensory agnosia
• Somatosensory agnosia
• Tactile agnosia
• Time agnosia

Clinical Information

• 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.
• Alexia, Pure-. loss of the power to comprehend written materials despite preservation of the ability to write (i.e., alexia without agraphia). this condition is generally attributed to lesions that "disconnect" the visual cortex of the non-dominant hemisphere from language centers in the dominant hemisphere. this may occur when a dominant visual cortex injury is combined with underlying white matter lesions that involve crossing fibers from the occipital lobe of the opposite hemisphere. (from adams et al., principles of neurology, 6th ed, p483)
• Prosopagnosia-. the inability to recognize a familiar face or to learn to recognize new faces. this visual agnosia is most often associated with lesions involving the junctional regions between the temporal and occipital lobes. the majority of cases are associated with bilateral lesions, however unilateral damage to the right occipito-temporal cortex has also been associated with this condition. (from cortex 1995 jun;31(2):317-29).
• Agnosia-. a rare disorder characterized by the lack of ability to recognize individuals, objects, shapes, sounds, or smells. there is no loss of memory. it is caused by neurological damage in the brain, specifically in the occipital or parietal lobes.
• Pain Agnosia|Analgesia-. loss of the ability to perceive and process pain.
• Prosopagnosia|Face Blindness-. impaired ability to recognize other human faces in the absence of a vision disorder. it may be a congenital disorder or the result of brain injury.
• Simultanagnosia-. a symptom describing the inability to comprehend more than one element of a visual picture at a given moment, or to integrate the whole visual picture.
• Visual Agnosia-. an inability to recognize or interpret objects by sight.

Convert to ICD-9 Code

Patient Education

Mental Disorders

What are mental disorders?

Mental disorders (or mental illnesses) are conditions that affect your thinking, feeling, mood, and behavior. They may be occasional or long-lasting (chronic). They can affect your ability to relate to others and function each day.

What are some types of mental disorders?

There are many different types of mental disorders. Some common ones include:

• Anxiety disorders, including panic disorder, obsessive-compulsive disorder, and phobias
• Depression, bipolar disorder, and other mood disorders
• Eating disorders
• Personality disorders
• Post-traumatic stress disorder
• Psychotic disorders, including schizophrenia

What causes mental disorders?

There is no single cause for mental illness. A number of factors can contribute to risk for mental illness, such as:

• Your genes and family history
• Your life experiences, such as stress or a history of abuse, especially if they happen in childhood
• Biological factors such as chemical imbalances in the brain
• A traumatic brain injury
• A mother's exposure to viruses or toxic chemicals while pregnant
• Use of alcohol or recreational drugs
• Having a serious medical condition like cancer
• Having few friends, and feeling lonely or isolated

Mental disorders are not caused by character flaws. They have nothing to do with being lazy or weak.

Who is at risk for mental disorders?

Mental disorders are common. More than half of all Americans will be diagnosed with a mental disorder at some time in their life.

How are mental disorders diagnosed?

The steps to getting a diagnosis include:

• A medical history
• A physical exam and possibly lab tests, if your provider thinks that other medical conditions could be causing your symptoms
• A psychological evaluation. You will answer questions about your thinking, feelings, and behaviors.

What are the treatments for mental disorders?

Treatment depends on which mental disorder you have and how serious it is. You and your provider will work on a treatment plan just for you. It usually involves some type of therapy. You may also take medicines. Some people also need social support and education on managing their condition.

In some cases, you may need more intensive treatment. You may need to go to a psychiatric hospital. This could be because your mental illness is severe. Or it could be because you are at risk of hurting yourself or someone else. In the hospital, you will get counseling, group discussions, and activities with mental health professionals and other patients.

Code History

• FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
• FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
• FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)