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  2. Current Procedural Terminology - Wikipedia

    en.wikipedia.org/wiki/Current_Procedural_Terminology

    The CPT code revisions in 2013 were part of a periodic five-year review of codes. Some psychotherapy codes changed numbers, for example 90806 changed to 90834 for individual psychotherapy of a similar duration. Add-on codes were created for the complexity of communication about procedures.

  3. Radiologically isolated syndrome - Wikipedia

    en.wikipedia.org/wiki/Radiologically_isolated...

    The presence of incidental MRI findings in the CNS white matter: Ovoid and well-circumscribed homogeneous foci, with or without involvement of the corpus callosum; T2 hyperintensities larger than 3 mm in diameter, which fulfill at least 3 of the 4 Barkhof MRI criteria [7] for DIS; The CNS abnormalities are not consistent with a vascular condition

  4. Leukoaraiosis - Wikipedia

    en.wikipedia.org/wiki/Leukoaraiosis

    Head CT showing periventricular white matter lesions. Leukoaraiosis is a particular abnormal change in appearance of white matter near the lateral ventricles. It is often seen in aged individuals, but sometimes in young adults. [1] [2] On MRI, leukoaraiosis changes appear as white matter hyperintensities (WMHs) in T2 FLAIR images.

  5. Healthcare Common Procedure Coding System - Wikipedia

    en.wikipedia.org/wiki/Healthcare_Common...

    HCPCS includes three levels of codes: Level I consists of the American Medical Association's Current Procedural Terminology (CPT) and is numeric.; Level II codes are alphanumeric and primarily include non-physician services such as ambulance services and prosthetic devices, and represent items and supplies and non-physician services, not covered by CPT-4 codes (Level I).

  6. Combined hyperlipidemia - Wikipedia

    en.wikipedia.org/wiki/Combined_hyperlipidemia

    Combined hyperlipidemia (or -aemia) is a commonly occurring form of hypercholesterolemia (elevated cholesterol levels) characterised by increased LDL and triglyceride concentrations, often accompanied by decreased HDL. [1]: 534 On lipoprotein electrophoresis (a test now rarely performed) it shows as a hyperlipoproteinemia type IIB. It is the ...

  7. List of ICD-9 codes 240–279: endocrine, nutritional and ...

    en.wikipedia.org/wiki/List_of_ICD-9_codes_240...

    This is a shortened version of the third chapter of the ICD-9: Endocrine, Nutritional and Metabolic Diseases, and Immunity Disorders. It covers ICD codes 240 to 279 . The full chapter can be found on pages 145 to 165 of Volume 1, which contains all (sub)categories of the ICD-9.

  8. Lesional demyelinations of the central nervous system

    en.wikipedia.org/wiki/Lesional_demyelinations_of...

    Using high field MRI system, with several variants several areas show lesions, and can be spacially classified in infratentorial, callosal, juxtacortical, periventricular, and other white matter areas. [21] Other authors simplify this in three regions: intracortical, mixed gray-white matter, and juxtacortical. [22]

  9. Gliosis - Wikipedia

    en.wikipedia.org/wiki/Gliosis

    Micrograph showing gliosis in the cerebellum. Reactive astrocytes on the left display severe proliferation and domain overlap. Reactive astrogliosis is the most common form of gliosis and involves the proliferation of astrocytes, a type of glial cell responsible for maintaining extracellular ion and neurotransmitter concentrations, modulating synapse function, and forming the blood–brain ...