In DSM-5, somatoform disorders are now referred to as somatic symptom and related disorders.
The new classification reduces the number of these disorders and subcategories to avoid problematic overlap.
Diagnoses of somatization disorder, hypochondriasis, pain disorder, and undifferentiated somatoform disorder have been removed.
Individuals previously diagnosed with somatization disorder will usually have symptoms that meet DSM-5 criteria for somatic symptom disorder, but only if they have the maladaptive thoughts, feelings, and behaviors that define the disorder, in addition to their somatic symptoms.

Adapted from American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders. 5th ed. Washington, DC. American Psychiatric Association. 2013. Internet. Accessed on July 13, 2017. p. 812.