ICD-9-CM 431
CMS Source: final ICD-9-CM release (version date October 1, 2014). Retired from U.S. claims after September 30, 2015.FacebookXLinkedInPrint

431 is a legacy ICD-9-CM diagnosis code for intracerebral hemorrhage. It was valid on U.S. claims through September 30, 2015 and cannot be reported for services on or after October 1, 2015, when ICD-10-CM replaced the ICD-9 code set. Under the CMS General Equivalence Mappings, its ICD-10-CM replacement is I61.9 (Nontraumatic intracerebral hemorrhage, unspecified), flagged as an approximate match.

Code Identity

ICD-9-CM Code
431
Valid for Submission
No — Legacy Code
Code Describes
Intracerebral hemorrhage
Short Description
Intracerebral hemorrhage
Same as the full description in the CMS dataset.
Parent Block
431 Intracerebral hemorrhage
ICD-10-CM Replacement
I61.9 (approximate)

Convert 431 to ICD-10-CM

Based on the final CMS General Equivalence Mappings (GEMs), 431 crosswalks to the following ICD-10-CM code.

ICD-10-CM
I61.9 Nontraumatic intracerebral hemorrhage, unspecified
Approximate The match is approximate rather than exact.

Index of Diseases References

Entries in the final ICD-9-CM Index to Diseases and Injuries that point to 431. Tap the icons for the official index conventions.

  • Encephalomalacia brain cerebellar cerebral cerebrospinal SEE ALSO Softening brain 348.89
    • due to
      • hemorrhage SEE ALSO Hemorrhage brain 431
  • Hematoma skin surface intact traumatic SEE ALSO Contusion
    • brain traumatic 853.0
      • nontraumatic SEE ALSO Hemorrhage brain 431
        • epidural or extradural 432.0
        • subarachnoid arachnoid or meningeal SEE ALSO Hemorrhage subarachnoid 430
        • subdural SEE ALSO Hemorrhage subdural 432.1
  • Hemorrhage hemorrhagic nontraumatic 459.0
    • artery NEC 459.0
      • brain SEE ALSO Hemorrhage brain 431
    • basilar ganglion SEE ALSO Hemorrhage brain 431
    • brain miliary nontraumatic 431
      • arachnoid see Hemorrhage subarachnoid
      • due to
        • rupture of aneurysm congenital SEE ALSO Hemorrhage subarachnoid 430
          • mycotic 431
      • epidural or extradural see Hemorrhage extradural
      • puerperal postpartum childbirth 674.0
      • stem 431
      • subarachnoid arachnoid or meningeal see Hemorrhage subarachnoid
      • subdural see Hemorrhage subdural
      • traumatic NEC 853.0
        • with
          • cerebral
            • contusion see Contusion brain
            • laceration see Laceration brain
          • open intracranial wound 853.1
          • skull fracture see Fracture skull by site
        • extradural or epidural 852.4
          • with open intracranial wound 852.5
        • subarachnoid 852.0
          • with open intracranial wound 852.1
    • bulbar SEE ALSO Hemorrhage brain 431
    • cephalic SEE ALSO Hemorrhage brain 431
    • cerebellar SEE ALSO Hemorrhage brain 431
    • cerebellum SEE ALSO Hemorrhage brain 431
    • cerebral SEE ALSO Hemorrhage brain 431
      • fetus or newborn anoxic traumatic 767.0
    • cerebromeningeal SEE ALSO Hemorrhage brain 431
    • cerebrospinal SEE ALSO Hemorrhage brain 431
    • cerebrum SEE ALSO Hemorrhage brain 431
    • cortical SEE ALSO Hemorrhage brain 431
    • internal organs 459.0
      • capsule SEE ALSO Hemorrhage brain 431
    • into
      • corpus luysii SEE ALSO Hemorrhage brain 431
    • intracerebral SEE ALSO Hemorrhage brain 431
    • intrapontine SEE ALSO Hemorrhage brain 431
    • intraventricular SEE ALSO Hemorrhage brain 431
    • lenticular striate artery SEE ALSO Hemorrhage brain 431
    • medulla SEE ALSO Hemorrhage brain 431
    • midbrain SEE ALSO Hemorrhage brain 431
    • pons SEE ALSO Hemorrhage brain 431
    • pontine SEE ALSO Hemorrhage brain 431
    • subcortical SEE ALSO Hemorrhage brain 431
    • ventricular SEE ALSO Hemorrhage brain 431
  • Rupture ruptured 553.9
    • artery 447.2
      • brain SEE ALSO Hemorrhage brain 431
    • blood vessel SEE ALSO Hemorrhage 459.0
      • brain SEE ALSO Hemorrhage brain 431
    • brain
      • hemorrhagic SEE ALSO Hemorrhage brain 431
  • Softening
    • brain NEC rotic progressive 348.89
      • hemorrhagic SEE ALSO Hemorrhage brain 431
  • Syndrome SEE ALSO Disease
    • falx SEE ALSO Hemorrhage brain 431

Information for Patients

Hemorrhagic Stroke

A stroke is a medical emergency. There are two types - ischemic and hemorrhagic. Hemorrhagic stroke is the less common type. It happens when a blood vessel breaks and bleeds into the brain. Within minutes, brain cells begin to die. Causes include a bleeding aneurysm, an arteriovenous malformation (AVM), or an artery wall that breaks open.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Questions About 431

Is 431 (intracerebral hemorrhage) still a valid code?

No. This code belonged to ICD-9-CM, which the United States retired after September 30, 2015. Claims with dates of service on or after October 1, 2015 must use ICD-10-CM codes, such as its replacement I61.9.

What is the ICD-10 replacement for 431?

The General Equivalence Mappings crosswalk this code to ICD-10-CM I61.9 (Nontraumatic intracerebral hemorrhage, unspecified). The match is flagged as approximate, so confirm it against the clinical documentation before use.

What did 431 mean?

In the final ICD-9-CM release, this code described intracerebral hemorrhage. It sat in block 431 Intracerebral hemorrhage under Diseases of the circulatory system (390–459).