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ICD-10 Guide
DiagnosesAphasia Following Costovertebral Angle

Aphasia Following Costovertebral Angle

ICD-10 Coding for Aphasia following Cerebrovascular Accident (CVA)(I69.321, R47.01)

PRIMARY SPECIALTYNeurology
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Aphasia Following Costovertebral Angle?
Essential facts and insights about Aphasia following Cerebrovascular Accident (CVA)

Key Clinical Considerations:

  • Presence of expressive or receptive language deficits following a cerebrovascular accident (CVA)
  • Neuroimaging (CT or MRI) showing evidence of ischemic or hemorrhagic stroke affecting language centers in the brain
  • Physical examination revealing aphasia symptoms such as difficulty in speaking, understanding, reading, or writing
  • Assessment of cognitive function indicating impairment in language processing abilities
  • Severity of aphasia classified using standardized scales (e.g., Boston Diagnostic Aphasia Examination)

Clinical Information

Clinical Criteria & Documentation Requirements

  • Complete medical history including onset and progression of symptoms
  • Specific terminology such as 'expressive aphasia' or 'receptive aphasia' must be documented
  • Examples include: 'Patient exhibits expressive aphasia post-CVA with difficulty in verbal communication'
  • Documentation of medical necessity for therapy services related to aphasia treatment
  • Quality measures may include documentation of language assessments and therapy progress notes

Coding Guidelines

Usage Guidelines & Examples

  • Use this diagnosis code when a patient presents with aphasia directly resulting from a CVA
  • Do NOT use this code for aphasia due to other causes such as traumatic brain injury or neurodegenerative diseases
  • Comparison with related codes such as I69.320 (Aphasia, unspecified) and R47.00 (Aphasia, unspecified)
  • Common errors include misclassifying aphasia types or failing to document the CVA as the cause
  • In complex cases, ensure to document the specific type of aphasia and its relation to the CVA

Code Exclusions

Important Exclusions

  • Conditions such as traumatic brain injury (TBI) or primary progressive aphasia are explicitly excluded
  • Alternative codes for excluded conditions include S06.0 (Concussion) for TBI-related aphasia
  • Exclusions are based on the underlying cause of aphasia not being a CVA
  • Common mistakes include coding aphasia without confirming the CVA as the cause
  • Related but distinct conditions include dysarthria and other speech-language disorders

Related ICD-10 Codes

Primary Codes
I69.321
Aphasia following cerebrovascular accident (CVA), expressive
R47.01
Aphasia, unspecified
Ancillary Codes
R47.01
Differential Codes
I69.928
R47.02

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Neurology

Specialty Applications

  • Patients with a history of cerebrovascular accidents (strokes)
  • Populations at risk include older adults, individuals with hypertension, diabetes, or a history of transient ischemic attacks
  • Clinical settings include inpatient rehabilitation facilities, outpatient therapy clinics, and neurology practices
  • Specialty-specific applications in neurology, speech-language pathology, and rehabilitation medicine
  • Treatment contexts where this diagnosis is used include speech therapy and cognitive rehabilitation

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

  • Comprehensive clinical documentation
  • Accurate code selection based on clinical criteria
  • Proper exclusion considerations
  • Specialty-specific coding guidelines

Documentation

Documentation Templates

Template 1

Template: 'Patient diagnosed with aphasia following CVA based on clinical findings of expressive language deficits.'

Template 2

Template: 'Clinical presentation consistent with aphasia including difficulty in verbal communication and comprehension.'

Template 3

Template: 'Diagnostic criteria for aphasia met as evidenced by neuroimaging showing stroke in the language center.'

Template 4

Template: 'Treatment plan initiated for aphasia with speech therapy and cognitive rehabilitation interventions.'

Template 5

Template: 'Follow-up care for aphasia including monitoring of language recovery and therapy effectiveness.'

Billing Information

Billing Considerations

  • Ensure proper documentation for billing
  • Verify code specificity requirements
  • Check for any additional codes needed
  • Review payer-specific guidelines

Common Issues

  • Insufficient clinical documentation
  • Incorrect code selection
  • Missing supporting diagnoses
  • Timing and frequency documentation

Frequently Asked Questions

What documentation is required for this diagnosis?

Detailed documentation of the patient's language deficits, neuroimaging results, and therapy plans.

How does this differ from similar diagnoses?

Aphasia following CVA is specifically linked to stroke events, while other types may arise from different neurological conditions.

What are common billing considerations?

Ensure that therapy services are justified with clear documentation of aphasia severity and treatment necessity.

What procedures are typically associated?

Related CPT codes include 92507 (Treatment of speech, language, voice, communication, and/or auditory processing disorder) and 92526 (Treatment of swallowing dysfunction).

Are there any quality reporting implications?

Quality measures may include tracking patient progress in language recovery and adherence to therapy protocols.