2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Congential Anomalies 740-759 > Chromosomal Anomalies 758.* >  2008 ICD-9-CM Diagnosis 758.7
Klinefelter's syndrome On October 1, 2008 the 2009 ICD-9-CM codes came into effect. Therefore, this code may be out of date.
The 2009 version of ICD-9-CM 758.7 can be accessed here. - A common sex chromosomal anomaly in males characterized mainly by small testes with tubular hyalinization, azospermia with infertility, slight breast enlargement, elevated urinary gonadotropins, and decreased urinary 17-ketosteroids. Dull mentality has been noted. The affected individuals appear normal after birth, except for small testes. Most characteristic features become evident at adolescence as hypogonadism, gynecomastia, incomplete virilization with variable eunuchoidism, and dull mentality. Without testosterone therapy, most adult patients may become obese. Occasional abnormalities may include cryptorchidism, hypospadias, ataxia, scoliosis during adolescence, and diabetes mellitus in adulthood.
- A SEX CHROMOSOME DISORDER characterized by small testes, underdevelopment of secondary sexual characteristics, infertility (INFERTILITY, MALE), hyalinization and fibrosis of the seminiferous tubules, and elevated levels of gonadotropin. Patients tend to have long legs and a slim, tall stature. GYNECOMASTIA is present in many of the patients. The classic form has the karyotype 47,XXY. Several variants include those with the karyotypes 48,XXYY; 48,XXXY; 49,XXXXY, and several mosaic patterns ( 46,XY/47,XXY; 47,XXY/48,XXXY, etc.).
- 758.7 is a specific code that can be used to specify a diagnosis
- 758.7 contains 6 index entries
- View the ICD-9-CM Volume 1 758.* hierarchy
758.7 also known as:
Index entries containing 758.7:- Anomaly, anomalous (congenital) (unspecified type) 759.9
- chromosomes, chromosomal 758.9
- sex 758.81
- complement, XXY
 758.7
- Klinefelter's 758.7
Klinefelter's syndrome 758.7
Syndrome - see also Disease- Klinefelter's 758.7
- XXY 758.7
XXY syndrome 758.7
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