2026 ICD-10-CM Diagnosis Code R90.89
Other abnormal findings on diagnostic imaging of central nervous system
- ICD-10-CM Code:
- R90.89
- ICD-10 Code for:
- Oth abnormal findings on diagnostic imaging of cnsl
- Is Billable?
- Yes - Valid for Submission
- Chronic Condition Indicator: [1]
- Not chronic
- Code Navigator:
R90.89 is a billable diagnosis code used to specify a medical diagnosis of other abnormal findings on diagnostic imaging of central nervous system. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2025 through September 30, 2026.
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.
Approximate Synonyms
The following list of clinical terms are approximate synonyms, alternative descriptions, or common phrases that might be used by patients, healthcare providers, or medical coders to describe the same condition. These synonyms and related diagnosis terms are often used when searching for an ICD-10 code, especially when the exact medical terminology is unclear. Whether you're looking for lay terms, similar diagnosis names, or common language alternatives, this list can help guide you to the correct ICD-10 classification.
- ARIA - amyloid-related imaging abnormality
- ARIA-E - amyloid-related image abnormality of edema or effusion
- ARIA-H - amyloid-related image abnormality of microhemorrhage or hemosiderosis
- Computed tomography of brain abnormal
- CT of head abnormal
- Dural tail sign
- Hyperintense lesion of basal ganglion on focal T2 magnetic resonance imaging
- Hyperintense lesion of brainstem on focal T2 magnetic resonance imaging
- Hyperintense lesion of thalamus on focal T2 magnetic resonance imaging
- Hypointense lesion of basal ganglion on focal T2 magnetic resonance imaging
- Hypointense lesion of brainstem on focal T2 magnetic resonance imaging
- Hypointense lesion of thalamus on focal T2 magnetic resonance imaging
- Imaging of brain abnormal
- Imaging of central nervous system abnormal
- Magnetic resonance imaging of brain abnormal
- Nonconvulsive seizure
- Tram track sign of optic nerve
- Vascular hyperintensity of basal ganglia matter on transverse relaxation time magnetic resonance imaging
- Vascular hyperintensity of bilateral frontal lobes on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of bilateral occipital lobes on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of bilateral parietal lobes on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of bilateral temporal lobes on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of caudate nucleus matter on transverse relaxation time magnetic resonance imaging
- Vascular hyperintensity of caudate nucleus on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of cerebellum on transverse relaxation time magnetic resonance imaging
- Vascular hyperintensity of frontal lobe on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of globus pallidus matter on transverse relaxation time magnetic resonance imaging
- Vascular hyperintensity of globus pallidus on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of hippocampus matter on transverse relaxation time magnetic resonance imaging
- Vascular hyperintensity of hippocampus on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of left frontal lobe on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of left occipital lobe on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of left parietal lobe on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of left temporal lobe on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of occipital lobe on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of paracentral lobule matter on transverse relaxation time magnetic resonance imaging
- Vascular hyperintensity of parietal lobe on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of periventricular white matter on transverse relaxation time magnetic resonance imaging
- Vascular hyperintensity of pontine matter on transverse relaxation time magnetic resonance imaging
- Vascular hyperintensity of putamen matter on transverse relaxation time magnetic resonance imaging
- Vascular hyperintensity of putamen on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of red nucleus matter on transverse relaxation time magnetic resonance imaging
- Vascular hyperintensity of right frontal lobe on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of right occipital lobe on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of right parietal lobe on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of right temporal lobe on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of temporal lobe on fluid attenuated inversion recovery magnetic resonance imaging
- Vascular hyperintensity of thalamus matter on transverse relaxation time magnetic resonance imaging
- Vascular hyperintensity of thalamus on fluid attenuated inversion recovery magnetic resonance imaging
Clinical Classification
Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories. These categories help simplify complex data by organizing related conditions under common clinical themes.
They are especially useful for data analysis, reporting, and clinical decision-making. Even when diagnosis codes differ, similar conditions can be grouped together based on their clinical relevance. Each category is assigned a unique CCSR code that represents a specific clinical concept, often tied to a body system or medical specialty.
Abnormal findings without diagnosis
CCSR Code: SYM017
Inpatient Default: Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.
Outpatient Default: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.
Tabular List of Diseases and Injuries
The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.
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.
- Other cerebrovascular abnormality found on diagnostic imaging of central nervous system
Index to Diseases and Injuries References
The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).
- Abnormal, abnormality, abnormalities - See Also: Anomaly;
- central nervous system NEC - R90.89
- cerebrovascular NEC - R90.89
Index of External Cause of Injuries
References found for this diagnosis code in the External Cause of Injuries Index:
- Abnormal, abnormality, abnormalities
- diagnostic imaging
- central nervous system NEC
- Abnormal, abnormality, abnormalities
- diagnostic imaging
- cerebrovascular NEC
Convert R90.89 to ICD-9-CM
Below are the ICD-9 codes that most closely match this ICD-10 code, based on the General Equivalence Mappings (GEMs). This ICD-10 to ICD-9 crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.
Nonsp abn find-body NEC
ICD-9-CM: 793.99
Approximate Flag - The approximate mapping means this ICD-10 code does not have an exact ICD-9 equivalent. The matched code is the closest available option, but it may not fully capture the original diagnosis or clinical intent.
Code History
- FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026
- FY 2025 - No Change, effective from 10/1/2024 through 9/30/2025
- FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
- 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. This was the first year ICD-10-CM was implemented into the HIPAA code set.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
