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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.
Mast cell activation syndrome (MCAS) is a term referring to one of two types of mast cell activation disorder (MCAD); the other type is idiopathic MCAD. [1] MCAS is an immunological condition in which mast cells, a type of white blood cell, inappropriately and excessively release chemical mediators, such as histamine, resulting in a range of chronic symptoms, sometimes including anaphylaxis or ...
Light chain deposition disease can affect any organ. [3] Renal involvement is always present and can be identified by microscopic hematuria and proteinuria.Due to the gradual buildup of light chains from plasma filtration, renal function rapidly declines in the majority of patients with LCDD as either acute tubulointerstitial nephritis or rapidly progressing glomerulonephritis.
Complement deficiency is an immunodeficiency of absent or suboptimal functioning of one of the complement system proteins. [4] Because of redundancies in the immune system, many complement disorders are never diagnosed.
Risk factors for severe antisynthetase syndrome include calcinosis, esophageal involvement, cancer, interstitial lung disease without myositis, severe respiratory involvement, and older age at the time of diagnosis. [10] Muscle weakness and arthritis at the point of diagnosis have been noted as favorable outcome measures. [63]
In roughly 10% of patients, a C2 deficiency is linked to an illness that resembles SLE. [9] Clinical manifestations of this SLE-like illness include fever, rash, arthritis, and glomerulonephritis. [10]
In cases in which a physician has difficulty explaining complicated medical concepts to a patient, that patient may be inclined to seek information on the internet. [8] A consensus exists that patients should have shared decision making, meaning that patients should be able to make informed decisions about the direction of their medical treatment in collaboration with their physician. [9]