Page:ICD-10-CM (2010).djvu/1164

 pyrexia NOS (O86.4)
 * R50.2 Drug induced fever
 * Code first (T36-T50) to identify drug
 * Excludes1: postvaccination (postimmunization) fever (R50.83)
 * R50.8 Other specified fever
 * R50.81 Fever presenting with conditions classified elsewhere
 * Code first underlying condition when associated fever is present, such as with:
 * leukemia (C91-C95)
 * neutropenia (D70.-)
 * sickle cell disease (D57.-)
 * R50.82 Postprocedural fever
 * Excludes1: postprocedural infection (T81.4)
 * postvaccination (postimmunization) fever (R50.83)
 * R50.83 Postvaccination fever
 * Postimmunization fever
 * R50.9 Fever, unspecified
 * Fever NOS
 * Fever of unknown origin [FUO]
 * Fever with chills
 * Fever with rigors
 * Hyperpyrexia NOS
 * Persistent fever
 * Pyrexia NOS

R51 Headache

 * Includes: facial pain NOS
 * Excludes1: atypical face pain (G50.1)
 * migraine and other headache syndromes (G43-G44)
 * trigeminal neuralgia (G50.0)

R52 Pain, unspecified

 * Acute pain NOS
 * Chronic pain NOS
 * Generalized pain NOS
 * Pain NOS
 * Excludes1: acute and chronic pain, not elsewhere classified (G89.-)
 * localized pain, unspecified type - code to pain by site, such as:
 * abdomen pain (R10.-)
 * back pain (M54.9)
 * breast pain (N64.4)
 * chest pain (R07.1-R07.9)
 * ear pain (H92.0-)
 * eye pain (H57.1)
 * headache (R51)
 * joint