2008 ICD-9-CM Volume 1 Diagnosis Codes Home > Endocrine, Nutritional And Metabolic Diseases, And Immunity Disorders 240-279 > Diseases Of Other Endocrine Glands 250-259 > Ovarian Dysfunction 256.* > 2008 ICD-9-CM Diagnosis 256.0 Hyperestrogenism  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 Therefore, this code may be out of date.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 256.0 can be accessed here. 256.0 is a specific code that can be used to specify a diagnosis 256.0 contains 9 index entries View the ICD-9-CM Volume 1 256.* hierarchy ICD9Data's sister site ProcedureCodes.com launches with the 2008/09 CPT® codes - read more on the ICD9Data.com blog. Index entries containing 256.0: Dysfunction ovary, ovarian 256.9 hyperfunction 256.1 estrogen 256.0 Hyperestrinism 256.0 Hyperestrogenism 256.0 Hyperestrogenosis 256.0 Hyperfolliculinism 256.0 Hyperfunction ovary 256.1 estrogen 256.0 Hypersecretion estrogen 256.0 Increase, increased estrogen 256.0 Puberty V21.1 precocious (constitutional) (cryptogenic) (idiopathic) NEC 259.1 due to ovarian hyperfunction 256.1 estrogen 256.0