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ICD-9 chapters; Chapter Block Title I 001–139: Infectious and Parasitic Diseases II 140–239: Neoplasms III 240–279: Endocrine, Nutritional and Metabolic Diseases, and Immunity Disorders IV 280–289: Diseases of the Blood and Blood-forming Organs V 290–319: Mental Disorders VI 320–389: Diseases of the Nervous System and Sense Organs ...
List of ICD-9 codes 140–239: neoplasms; List of ICD-9 codes 240–279: endocrine, nutritional and metabolic diseases, and immunity disorders; List of ICD-9 codes 280–289: diseases of the blood and blood-forming organs; List of ICD-9 codes 290–319: mental disorders; List of ICD-9 codes 320–389: diseases of the nervous system and sense organs
A brain metastasis is a cancer that has metastasized (spread) to the brain from another location in the body and is therefore considered a secondary brain tumor. [ 1 ] [ 2 ] The metastasis typically shares a cancer cell type with the original site of the cancer. [ 3 ]
Clinically, the majority of diagnosed CNS metastasis are derived from well-known primary tumours, while still, about 5-10% are from unknown sources. [8] Since most cancers can progress towards CNS metastasis despite multimodal treatments, it is a significant risk for patients with systemic cancer.
The International Classification of Diseases for Oncology (ICD-O) is a domain-specific extension of the International Statistical Classification of Diseases and Related Health Problems for tumor diseases.
Although anaplastic meningioma has higher chances of distant metastasis than the other two types, the overall incidence of meningioma metastasis is only 0.18%; which is considered rare. [26] Even if, by general rule, neoplasms of the nervous system (brain tumors) cannot metastasize into the body because of the blood–brain barrier , anaplastic ...
The DSM-5 (2013), the current version, also features ICD-9-CM codes, listing them alongside the codes of Chapter V of the ICD-10-CM. On 1 October 2015, the United States health care system officially switched from the ICD-9-CM to the ICD-10-CM. [1] [2] The DSM is the authoritative reference work in diagnosing mental disorders in the world.
Oligoastrocytomas are a subset of brain tumors that present with an appearance of mixed glial cell origin, astrocytoma and oligodendroglioma. [1] However, the term "Oligoastrocytoma" is now considered obsolete by the National Comprehensive Cancer Network [2] stating "the term should no longer be used as such morphologically ambiguous tumors can be reliably resolved into astrocytomas and ...