2021 ICD-10-CM Code R56.9
Unspecified convulsions
Valid for Submission
R56.9 is a billable diagnosis code used to specify a medical diagnosis of unspecified convulsions. The code R56.9 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
The ICD-10-CM code R56.9 might also be used to specify conditions or terms like 1 to 12 seizures a year, 1 to 7 seizures a week, 2 to 4 seizures a month, acute repetitive seizure, afebrile seizure , alcohol withdrawal syndrome, etc.
Unspecified diagnosis codes like R56.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.
Code Classification
Tabular List of Diseases and Injuries
The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code R56.9:
Inclusion Terms
Inclusion TermsThese 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.
- Convulsion disorder
- Fit NOS
- Recurrent convulsions
- Seizure(s) (convulsive) NOS
Index to Diseases and Injuries
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code R56.9 are found in the index:
- - Convulsions (idiopathic) - See Also: Seizure(s); - R56.9
- - recurrent - R56.9
- - Disorder (of) - See Also: Disease;
- - paroxysmal, mixed - R56.9
- - Fit - R56.9
- - Seizure (s) - See Also: Convulsions; - R56.9
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- 1 to 12 seizures a year
- 1 to 7 seizures a week
- 2 to 4 seizures a month
- Acute repetitive seizure
- Afebrile seizure
- Alcohol withdrawal syndrome
- Central convulsion
- Childhood obesity
- Childhood seizure
- Daily seizures
- Disorder of lysine and hydroxylysine metabolism
- EEG abnormality with seizure
- Emergency epilepsy treatment since last appointment
- Epileptic cry
- Fall due to seizure
- Familial psoriasis
- Folinic acid responsive seizure syndrome
- Hypnotic substance withdrawal with perceptual disturbances
- Hypnotic withdrawal
- Hypoglycemia-induced convulsion
- Intellectual disability, seizures, hypotonia, ophthalmologic, skeletal anomalies syndrome
- Intellectual disability, seizures, macrocephaly, obesity syndrome
- Lowered convulsive threshold
- Many seizures a day
- Microcephaly, seizure, intellectual disability, heart disease syndrome
- Neurological disorder caused by ingestible alcohol
- O/E - fit/convulsion
- Obesity by age of onset
- Osteogenesis imperfecta, retinopathy, seizures, intellectual disability syndrome
- Perceptual disturbance due to alcohol withdrawal
- Perceptual disturbances and seizures co-occurrent and due to alcohol withdrawal
- Perceptual disturbances and seizures co-occurrent and due to hypnotic withdrawal
- Perceptual disturbances and seizures co-occurrent and due to psychoactive substance withdrawal
- Perceptual disturbances and seizures co-occurrent and due to sedative withdrawal
- Perceptual disturbances co-occurrent and due to psychoactive substance withdrawal
- Post-ictal state
- Postseizure headache
- Primary hyperaldosteronism, seizures, neurological abnormalities syndrome
- Psychoactive substance-induced withdrawal syndrome
- Psychoactive substance-induced withdrawal syndrome
- Psychoactive substance-induced withdrawal syndrome
- Raised convulsive threshold
- Recurrent seizure
- Sedative substance withdrawal with perceptual disturbances
- Sedative withdrawal
- Sedative withdrawal
- Sedative withdrawal with seizure
- Seizure
- Seizure co-occurrent and due to drug withdrawal
- Seizure co-occurrent and due to drug withdrawal
- Seizure co-occurrent and due to hypnotic withdrawal
- Seizure co-occurrent and due to psychoactive substance withdrawal
- Seizure disorder
- Seizure disorder as sequela of stroke
- Seizure undetermined whether focal or generalized
- Seizures and intellectual disability due to hydroxylysinuria
- Seizures complicating infection
- Single seizure
- Single seizure due to remote cause
- Single unprovoked seizure
- Situation-related seizures
- Situation-related seizures
- Tetanic convulsion
- Uremic convulsion
- X-linked intellectual disability with seizure and psoriasis syndrome
Clinical Information
- SEIZURES FEBRILE-. seizures that occur during a febrile episode. it is a common condition affecting 2 5% of children aged 3 months to five years. an autosomal dominant pattern of inheritance has been identified in some families. the majority are simple febrile seizures generally defined as generalized onset single seizures with a duration of less than 30 minutes. complex febrile seizures are characterized by focal onset duration greater than 30 minutes and/or more than one seizure in a 24 hour period. the likelihood of developing epilepsy i.e. a nonfebrile seizure disorder following simple febrile seizures is low. complex febrile seizures are associated with a moderately increased incidence of epilepsy. from menkes textbook of child neurology 5th ed p784
- EPILEPSY TONIC CLONIC-. a generalized seizure disorder characterized by recurrent major motor seizures. the initial brief tonic phase is marked by trunk flexion followed by diffuse extension of the trunk and extremities. the clonic phase features rhythmic flexor contractions of the trunk and limbs pupillary dilation elevations of blood pressure and pulse urinary incontinence and tongue biting. this is followed by a profound state of depressed consciousness post ictal state which gradually improves over minutes to hours. the disorder may be cryptogenic familial or symptomatic caused by an identified disease process. from adams et al. principles of neurology 6th ed p329
- EPILEPSY POST TRAUMATIC-. recurrent seizures causally related to craniocerebral trauma. seizure onset may be immediate but is typically delayed for several days after the injury and may not occur for up to two years. the majority of seizures have a focal onset that correlates clinically with the site of brain injury. cerebral cortex injuries caused by a penetrating foreign object craniocerebral trauma penetrating are more likely than closed head injuries head injuries closed to be associated with epilepsy. concussive convulsions are nonepileptic phenomena that occur immediately after head injury and are characterized by tonic and clonic movements. from rev neurol 1998 feb;26150:256 261; sports med 1998 feb;252:131 6
- SEIZURES-. clinical or subclinical disturbances of cortical function due to a sudden abnormal excessive and disorganized discharge of brain cells. clinical manifestations include abnormal motor sensory and psychic phenomena. recurrent seizures are usually referred to as epilepsy or "seizure disorder."
- EPILEPSY BENIGN NEONATAL-. a condition marked by recurrent seizures that occur during the first 4 6 weeks of life despite an otherwise benign neonatal course. autosomal dominant familial and sporadic forms have been identified. seizures generally consist of brief episodes of tonic posturing and other movements apnea eye deviations and blood pressure fluctuations. these tend to remit after the 6th week of life. the risk of developing epilepsy at an older age is moderately increased in the familial form of this disorder. neurologia 1996 feb;112:51 5
Diagnostic Related Groups - MS-DRG Mapping
The ICD-10 code R56.9 is grouped in the following groups for version MS-DRG V38.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). applicable from 10/01/2020 through 09/30/2021.
Convert R56.9 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code R56.9 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
- 780.39 - Convulsions NEC (Approximate Flag)
Information for Patients
Seizures
Seizures are symptoms of a brain problem. They happen because of sudden, abnormal electrical activity in the brain. When people think of seizures, they often think of convulsions in which a person's body shakes rapidly and uncontrollably. Not all seizures cause convulsions. There are many types of seizures and some have mild symptoms. Seizures fall into two main groups. Focal seizures, also called partial seizures, happen in just one part of the brain. Generalized seizures are a result of abnormal activity on both sides of the brain.
Most seizures last from 30 seconds to 2 minutes and do not cause lasting harm. However, it is a medical emergency if seizures last longer than 5 minutes or if a person has many seizures and does not wake up between them. Seizures can have many causes, including medicines, high fevers, head injuries and certain diseases. People who have recurring seizures due to a brain disorder have epilepsy.
NIH: National Institute of Neurological Disorders and Stroke
- Absence seizure (Medical Encyclopedia)
- EEG (Medical Encyclopedia)
- Epilepsy or seizures - discharge (Medical Encyclopedia)
- Febrile seizures (Medical Encyclopedia)
- Generalized tonic-clonic seizure (Medical Encyclopedia)
- Partial (focal) seizure (Medical Encyclopedia)
- Seizures (Medical Encyclopedia)
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Code History
- 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)