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Z86.79
ICD-10-CM
History of Brain Aneurysm

Find comprehensive information on documenting a history of brain aneurysm for accurate clinical care and medical coding. This resource covers diagnosis codes, clinical documentation improvement CDI best practices, past pointing, subarachnoid hemorrhage SAH, risk factors, family history, previous rupture, diagnostic imaging reports, and treatment history for brain aneurysms. Learn how to properly document a patient's history of brain aneurysm to ensure optimal patient care and accurate reimbursement.

Also known as

History of Cerebral Aneurysm
Past Brain Aneurysm
Previous Cerebral Aneurysm

Diagnosis Snapshot

Key Facts
  • Definition : Weakened blood vessel wall in the brain that balloons out. May rupture, causing bleeding.
  • Clinical Signs : Often asymptomatic until rupture. Sudden severe headache, stiff neck, nausea, loss of consciousness.
  • Common Settings : Emergency room, neurosurgery clinic, neurology ward, intensive care unit.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC Z86.79 Coding
I67.1

Cerebral aneurysm, non-ruptured

History of a non-ruptured aneurysm in the brain.

I60-I69

Cerebrovascular diseases

Encompasses various cerebrovascular conditions, including aneurysms.

I67.8

Other cerebrovascular diseases

Includes other specified cerebrovascular diseases like dissecting aneurysms.

Z86.71

Personal history of aneurysm

Indicates a past history of an aneurysm, not currently active.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is the brain aneurysm ruptured?

  • Yes

    Is there subarachnoid hemorrhage?

  • No

    Is the aneurysm currently being treated?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Brain Aneurysm
Subarachnoid Hemorrhage
Intracranial Hemorrhage, NOS

Documentation Best Practices

Documentation Checklist
  • Document aneurysm location, size, and morphology.
  • Record diagnostic imaging results (CTA, MRA, DSA).
  • Detail presenting symptoms (headache, neurological deficits).
  • Note prior aneurysm history, treatment, and family history.
  • Specify if ruptured or unruptured, symptomatic or asymptomatic.

Coding and Audit Risks

Common Risks
  • Unspecified Aneurysm

    Coding I77.9 (unspecified aneurysm) when documentation specifies location. Requires more specific ICD-10 code for accurate reimbursement and quality reporting.

  • Ruptured vs Unruptured

    Failing to distinguish between ruptured (I60.-) and unruptured (I77.1) aneurysm impacts severity and subsequent care documentation requirements.

  • Missing Supporting Documentation

    Lack of imaging or procedural reports confirming the aneurysm diagnosis leads to coding queries and potential denial of claims. Clear documentation is crucial.

Mitigation Tips

Best Practices
  • Code aneurysm location, type, and status (ruptured/unruptured).
  • Document pre-existing conditions impacting aneurysm management.
  • Ensure clear documentation of diagnostic studies: MRA, CTA, DSA.
  • For ruptured aneurysms, detail neurological exam and treatment.
  • Regularly review and update coding for aneurysm-related complications.

Clinical Decision Support

Checklist
  • Confirm documented SAH, ICH, or other aneurysm rupture event.
  • Review imaging reports for aneurysm presence and location.
  • Verify aneurysm treatment status (clipped, coiled, or untreated).
  • Check for documentation of size and morphology if available.

Reimbursement and Quality Metrics

Impact Summary
  • Brain Aneurysm History Coding: ICD-10 I77.81, impacts MS-DRG assignment, affecting reimbursement.
  • Accurate aneurysm history coding crucial for risk adjustment, impacting quality scores and hospital rankings.
  • Coding validation and physician documentation key for appropriate brain aneurysm history reimbursement.
  • History of brain aneurysm coding impacts quality metrics related to long-term patient outcomes and readmission rates.

Streamline Your Medical Coding

Let S10.AI help you select the most accurate ICD-10 codes for . Our AI-powered assistant ensures compliance and reduces coding errors.

Quick Tips

Practical Coding Tips
  • Code I67.1 for ruptured aneurysm
  • Code I67.8 for unruptured
  • Document aneurysm location
  • Specify SAH if applicable
  • Query physician if unclear

Documentation Templates

Patient presents with a history of intracranial aneurysm.  Initial diagnosis of brain aneurysm was confirmed on [Date] via [Diagnostic imaging modality, e.g., cerebral angiography, CT angiography, MRI].  Aneurysm location was documented as [Specific location, e.g., anterior communicating artery, posterior communicating artery, basilar artery tip].  Aneurysm size was measured at [Size in millimeters].  At the time of diagnosis, the patient presented with [Symptoms at time of diagnosis, e.g., sudden severe headache, double vision, stiff neck, loss of consciousness, seizures, or asymptomatic].  Subsequent management included [Treatment approach, e.g., microsurgical clipping, endovascular coiling, conservative management with serial imaging surveillance].  Current symptoms include [Current symptoms, e.g., headache, neurological deficits, or asymptomatic].  Patient reports compliance with prescribed medications, which include [List medications].  Neurological examination reveals [Neurological findings, e.g., cranial nerves intact, normal motor strength and reflexes, or specific deficits].  Risk factors for aneurysm development include [Risk factors, e.g., smoking, hypertension, family history of aneurysms, polycystic kidney disease].  Patient education provided regarding aneurysm rupture risk factors, signs and symptoms of subarachnoid hemorrhage, and importance of follow-up.  Plan includes [Plan, e.g., continued surveillance imaging, follow-up with neurosurgery, lifestyle modifications for risk factor management].  ICD-10 code I67.1 (Cerebral aneurysm, non-ruptured) is applicable for ongoing monitoring.  Differential diagnoses considered at initial presentation included [Differential diagnoses, e.g., migraine, cluster headache, meningitis].  Prognosis for long-term stability is [Prognosis, e.g., good with continued monitoring, guarded due to aneurysm location and size].
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