ICD-10 Diagnosis Code R51


Diagnosis Code R51

ICD-10: R51
Short Description: Headache
Long Description: Headache
This is the 2018 version of the ICD-10-CM diagnosis code R51

Valid for Submission
The code R51 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • General symptoms and signs (R50-R69)
      • Headache (R51)

Information for Medical Professionals

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.
Diagnostic Related Groups
The diagnosis code R51 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Aching headache
  • Aural headache
  • Bilateral headache
  • Chronic headache disorder
  • Chronic pain in face
  • Complaining of a headache
  • Craniofacial pain
  • Daily headache
  • Dental headache
  • Face ache
  • Facial tenderness
  • Finding of headache character
  • Finding of headache character
  • Finding of headache character
  • Frequent headache
  • Frontal headache
  • Frontal sinus pain
  • Generalized headache
  • Headache
  • Headache caused by high altitude
  • Headache disorder
  • Headache due to cold exposure
  • Headache due to external compression of head
  • Headache due to intracranial disease
  • Headache due to reversible cerebral vasoconstriction syndrome
  • Headache following myelography
  • Headache site
  • Heavy head
  • Hindbrain hernia headache
  • Intermittent headache
  • Low pressure headache
  • Low pressure headache
  • Low pressure headache
  • Maxillary sinus pain
  • Morning headache
  • Muscular headache
  • Nasal headache
  • Obstetric spinal and epidural anesthesia-induced headache
  • Occipital headache
  • On examination - frontal sinus pain
  • On examination - maxillary sinus pain
  • Orthostatic headache
  • Pain in cheek
  • Pain in chin
  • Pain in face
  • Pain of head and neck region
  • Pain of skin
  • Pain radiating to head
  • Parietal headache
  • Post dural puncture headache
  • Post dural puncture headache
  • Post-ictal state
  • Postmyelography headache
  • Postpartum headache
  • Postseizure headache
  • Postural headache
  • Referred pain
  • Referred pain in face
  • Scalp tenderness
  • Shooting headache
  • Shooting pain
  • Sinus headache
  • Skin tenderness
  • Temporal headache
  • Tenderness of head and neck region
  • Tenderness of respiratory structure
  • Tenderness of respiratory structure
  • Tenderness over frontal sinus
  • Tenderness over maxillary sinus
  • Throbbing headache
  • Throbbing pain
  • Viral headache

Index of Diseases and Injuries
References found for the code R51 in the Index of Diseases and Injuries:

Information for Patients


Almost everyone has had a headache. Headache is the most common form of pain. It's a major reason people miss days at work or school or visit the doctor.

The most common type of headache is a tension headache. Tension headaches are due to tight muscles in your shoulders, neck, scalp and jaw. They are often related to stress, depression or anxiety. You are more likely to get tension headaches if you work too much, don't get enough sleep, miss meals, or use alcohol.

Other common types of headaches include migraines, cluster headaches, and sinus headaches. Most people can feel much better by making lifestyle changes, learning ways to relax and taking pain relievers.

Not all headaches require a doctor's attention. But sometimes headaches warn of a more serious disorder. Let your health care provider know if you have sudden, severe headaches. Get medical help right away if you have a headache after a blow to your head, or if you have a headache along with a stiff neck, fever, confusion, loss of consciousness, or pain in the eye or ear.

NIH: National Institute of Neurological Disorders and Stroke

  • Cluster headache (Medical Encyclopedia)
  • Headache (Medical Encyclopedia)
  • Headaches -- danger signs (Medical Encyclopedia)
  • Managing tension headaches at home (Medical Encyclopedia)
  • Tension headache (Medical Encyclopedia)

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