Allergy Testing
Allergies result from an overreaction of the immune system to foreign substances. An allergy develops when the body is exposed to a substance that prompts the initiation of an immune response. This response involves the production of antibodies, called immunoglobulins (Igs), which are directed against proteins of the foreign substance, called allergens or antigens. While there are five classes of immunoglobulins, it is IgE that is typically involved in allergic reactions. When an allergy-prone individual is exposed to a specific antigen, B-cells producean IgE that recognizes only that antigen. This antigen-specific IgE then binds to receptors on specific cells that reside in tissue (mast cells) or circulate in the blood (basophils). Upon re-exposure to the same antigen, the antigen-specific IgE binds to membrane receptors on tissue mast cells and blood basophils and then releases a series of chemicals (histamine, leukotrienes, cytokines and proteases) that regulate the allergic reaction. While the allergic reaction begins immediately, signs and symptoms of the reaction may occur within seconds or minutes (immediate hypersensitivity), may be delayed for several hours (delayed hypersensitivity), or may involve both early- and late-phase reactions.
Allergy tests are performed to verify or exclude the presence of IgE-mediated hypersensitivity and to identify the causative allergen(s). Testing may involve in vivo procedures, which determine the presence of specific IgE by administering an IgE-specific allergen into, on or near the patient and monitoring the patient’s physiological response(s). Allergy tests may also be in vitro procedures that determine the presence of specific IgE or elevated total IgE by analyzing patient serum.
The allergy testing methods and recommendations detailed below are based primarily on practice parameters and recommendations from the American Academy of Allergy, Asthma, and Immunology (AAAAI) and the American Academy of Otolaryngic Allergy (AAOA).
Medicare Guideline posts
- Home
- Finding Medicare fee schedule - HOw to Guide
- LCD and procedure to diagnosis lookup - How to Gui...
- Medicare Fee Schedule, Payment and Reimbursement Benefit Guideline,
- Step by step Guide Medicare participation program
- Medicare Fee for Office Visit CPT Codes - CPT Code 99213, 99214, 99203
- Medicare revalidation process - how often provide need to do - FAQ
- Gastroenterology, Colonoscopy, Endoscopy Medicare CPT Code Fee
- Medicare claim address, phone numbers, payor id - revised list
Top Medicare billing tips
-
Condition Codes 20 and 21, Occurrence Code 32 If an FI receives a completely non-covered claim with either a condition code 20 or a condit...
-
CPT 99201 Office or other outpatient visit for the evaluation and management of a new patient, which requires these three key components: a...
-
This post has Most used J code list and we are constantly updating with example . If you are looking particular J code, use search button. ...
-
Procedure code and description 93000 - Electrocardiogram, routine ECG with at least 12 leads; with interpretation and report -average fee... -
FL 42 - Revenue Code Required. The provider enters the appropriate revenue codes from the following list to identify specific accommodation ...
-
Procedure code and description 11400- Excision, benign lesion, except skin tag (unless listed elsewhere), trunk, arms or legs; lesion d...
-
Procedure code and description 93224 - External electrocardiographic recording up to 48 hours by continuous rhythm recording and storage;...
-
Procedure Codes and Definitions 36415 Collection of venous blood by venipuncture - Fee schedule amount $3.10 - Private insurance pay upt... -
URIBEL- methenamine, sodium phosphate, monobasic, monohydrate, phenyls alicylate, methylene blue, and hyoscyamine sulfate capsule Uribel i... -
CPT CODES and Description 81000 Urinalysis, by dip stick or tablet reagent for bilirubin, glucose, hemoglobin, ketones, leukocytes, nitr...
No comments:
Post a Comment