R47.01

🗣️ ICD-10 CM R47.01 — Aphasia

Billable Code Confirmed

ICD-10-CM R47.01 is a valid, billable 6-character ICD-10-CM diagnosis code for FY2026 (effective October 1, 2024 as part of the FY2025 update; unchanged for FY2026). Characters 1-3 (R47) identify the category as speech disturbances, not elsewhere classified; character 4 (.0) specifies dysphasia and aphasia; characters 5-6 (01) identify aphasia specifically, distinguishing it from dysphasia (R47.09 dysphasia NOS and R47.1 dysarthria). All 6 characters are required — no additional extension characters are needed.

Non-Billable Parent Codes — Never Submit These

• ❌ R47 — 3-character category header — does not specify the type of speech disturbance
• ❌ R47.0 — 5-character subcategory — covers both dysphasia and aphasia; not specific to aphasia alone

Always submit R47.01 (all 6 characters) when aphasia is documented without a confirmed, established underlying etiology that would direct a more specific code.

Clinical Context: R47.01 Is a Symptom Code — Use Only When Etiology Is Absent

R47.01 is a symptom code from Chapter 18 — it is appropriate only when aphasia is documented without a confirmed causal diagnosis, or during an initial encounter before etiology is established. When a causative condition is known (stroke, cerebrovascular disease, neoplasm, TBI, neurodegenerative disease), the etiology-specific code takes precedence and R47.01 is either replaced or, in some cases, used as an additional code. Per ICD-10-CM Official Guidelines (Section I.C.18), a sign or symptom code should not be coded when a definitive diagnosis explaining that sign or symptom has been established and documented by the provider.

Code Classification

ICD-10-CM Diagnosis Code — This is a symptom/sign code under Chapter 18. wRVU, assistant-at-surgery payable, and global period fields are not applicable to diagnosis codes. R47.01 carries no HCC weight under CMS-HCC v28 — see the HCC Risk Adjustment section for the full etiology-to-HCC crosswalk.

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🔍 Code Description

ICD-10-CM R47.01 classifies aphasia — the acquired loss or severe impairment of language processing ability, affecting one or more of the following domains: spoken expression, auditory comprehension, reading (alexia), and written expression (agraphia). Aphasia results from damage to the dominant hemisphere’s cortical language network — classically involving Broca’s area (left inferior frontal gyrus — expressive language), Wernicke’s area (left posterior superior temporal gyrus — receptive language), or the white matter pathways (including the arcuate fasciculus) connecting these regions.

Unlike developmental language disorders (F80.1, F80.2), aphasia is acquired — arising from brain injury in a previously language-competent individual. Unlike dysarthria (R47.1), aphasia is a language processing disorder, not a motor speech disorder — the muscles of articulation may function normally, but the cortical systems for language formulation and comprehension are impaired. The key clinical and coding distinction is that R47.01 is the correct code only when no confirmed etiology has been established or documented — once a cause is identified and documented by the provider, etiology-specific coding governs.

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🌳 Code Tree / Hierarchy

R47   Speech disturbances, not elsewhere classified ❌ Non-billable
│   Excludes1: autism (F84.0)
│              cluttering (F80.81)
│              specific developmental disorders of speech/language (F80.-)
│              stuttering (F80.81)
│
├── R47.0  Dysphasia and aphasia ❌ Non-billable
│   │
│   ├── ▶▶ R47.01 ◀◀  Aphasia  ← YOU ARE HERE ✅ Billable
│   │         Excludes1: aphasia following cerebrovascular disease (I69.- final chars -20)
│   │                    progressive isolated aphasia (G31.01)
│   │
│   └── R47.09  Other dysphasia ✅ Billable
│
├── R47.1  Dysarthria and anarthria ✅ Billable
│
├── R47.81  Slurred speech ✅ Billable
│
└── R47.89  Other speech disturbances ✅ Billable

R47.01 vs. R47.09 — Aphasia vs. Dysphasia

R47.01 (Aphasia) and R47.09 (Other dysphasia) are sibling codes under R47.0 and are not interchangeable. Aphasia implies a complete or severe loss of language function; dysphasia implies partial impairment. When the provider documents “aphasia,” assign R47.01. When the provider documents “dysphasia,” “word-finding difficulty,” or “partial aphasia,” assign R47.09. Do not infer severity from clinical findings — use the provider’s documented terminology, and query when ambiguous. This distinction also directly parallels the I69.32x family: I69.320 (aphasia) vs. I69.321 (dysphasia) following cerebral infarction.

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✅ Includes

The following clinical terms and scenarios map to R47.01 when documented without a confirmed underlying etiology:

• Aphasia, NOS (not otherwise specified)
• Aphasia, unspecified cause — during initial workup before etiology is confirmed
• Aphasia — when the treating provider’s documentation does not link the aphasia to a specific cerebrovascular, neoplastic, traumatic, or neurodegenerative condition
• Acquired aphasia (non-developmental) with undetermined etiology
• Aphasia in a patient with non-stroke neurological conditions (brain tumor, TBI, encephalopathy) — used alongside the primary etiology code when the primary code does not subsume aphasia (contrast with I69.x20 which replaces R47.01 entirely)

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❌ Excludes

Excludes 1 — Cannot Be Coded Simultaneously with R47.01

Code	Description	Note
I69.020	Aphasia following nontraumatic subarachnoid hemorrhage	When subarachnoid hemorrhage is the documented cause, assign this code — R47.01 is excluded entirely; do not code both
I69.120	Aphasia following nontraumatic intracerebral hemorrhage	When intracerebral hemorrhage is the documented cause, assign I69.120 — R47.01 is excluded
I69.220	Aphasia following other nontraumatic intracranial hemorrhage	Same principle — hemorrhagic CVA as documented cause excludes R47.01
I69.320	Aphasia following cerebral infarction	Most common Excludes 1 scenario — when ischemic stroke is the documented cause, assign I69.320; R47.01 is NOT assigned; these are mutually exclusive
I69.820	Aphasia following other cerebrovascular disease	When another cerebrovascular disease is the documented cause
I69.920	Aphasia following unspecified cerebrovascular disease	When cerebrovascular disease is documented as the cause but the specific type is unspecified
G31.01	Primary progressive aphasia (Pick disease)	When progressive isolated (primary progressive) aphasia is diagnosed — this is a neurodegenerative entity with its own code; R47.01 is excluded

Excludes 1 Violation Risk

The single most common Excludes 1 violation for R47.01 is assigning it simultaneously with I69.320 (or any I69.x20 code) for the same patient and encounter. When a provider has documented that aphasia is attributable to a prior stroke or cerebrovascular disease, only the I69.x20 code is assigned — [[R47.01]] is fully excluded. This is the highest-frequency documentation-coding mismatch for this code: a provider writes “aphasia” in the assessment without explicitly linking it to the documented stroke history, leading a coder to assign R47.01 when I69.320 is the correct code. A CDI query is appropriate when this disconnect is present.

Excludes 2 — May Be Coded in Addition if Separately Present

Code	Description	Note
F80.1	Expressive language disorder	Developmental language disorder — a distinct entity from acquired aphasia; separately codeable only when both a pre-existing developmental language disorder AND new-onset acquired aphasia are documented as coexisting conditions
F80.2	Mixed receptive-expressive language disorder	Same principle — developmental; separately codeable when both conditions co-exist and are separately documented

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📋 Clinical Overview

R47.01 vs. Etiology-Specific Aphasia Codes — When to Use Each

Code selection for aphasia requires determining whether a specific confirmed etiology has been documented by the provider. This is the most clinically and financially significant coding decision for this diagnosis.

Feature	R47.01 — Aphasia NOS	I69.320 — Post-Stroke Aphasia	G31.01 — Primary Progressive Aphasia
Etiology Status	Unknown, unconfirmed, or not documented	Confirmed prior cerebral infarction	Confirmed neurodegenerative — frontotemporal lobar degeneration
Code Chapter	Chapter 18 — Symptoms & Signs	Chapter 9 — Circulatory System	Chapter 6 — Nervous System
HCC Mapping (v28)	❌ None	✅ HCC 100 (~0.273 RAF)	❌ None (G31.01 itself does not map to HCC)
DRG Impact (Secondary)	No CC/MCC credit	CC-level secondary in some DRG families	No CC/MCC credit
Appropriate Setting	Initial workup, undetermined cause, or non-CVA etiology without subsumption	All encounters after stroke etiology is established	Documented neurodegenerative PPA diagnosis
Payer Scrutiny	Elevated — payers increasingly flag R47.01 when CVA history is present	Lower when documentation supports causal link	Low — distinct clinical entity
CDI Action	Query for underlying cause when CVA history is present	None needed when cause is documented	None needed when diagnosis is confirmed

CDI Query Trigger — Known CVA History + R47.01 Assignment

When a patient has a documented history of prior stroke in the medical record AND the provider’s current note documents or examines aphasia without explicitly linking it to the stroke — leading to R47.01 assignment instead of I69.320 — this is the highest-priority CDI query scenario for this code. The query should ask the provider to confirm whether the documented aphasia is attributable to the prior cerebrovascular event. If confirmed, I69.320 (or the applicable I69.x20 code) replaces R47.01 and activates HCC 100 capture. Sprypt, Providers Care Billing, and ASHA all flag this as the #1 documentation gap for aphasia coding.

Manifestations & Symptom Burden

When R47.01 is appropriately assigned (etiology not established), document all associated findings as separate codes to support clinical complexity:

• Dysphagia — R13.10 / R13.11 / R13.12 / R13.19: separately codeable when swallowing impairment co-exists with aphasia; critical for SLP medical necessity documentation
• Cognitive impairment — R41.3 (other amnesia), R41.89 (other cognitive function alterations): when cognitive deficits accompany aphasia, code separately if documented
• Hemiplegia/hemiparesis — when motor deficits co-exist with aphasia in the acute workup phase and etiology is unconfirmed, code separately using appropriate R or G-chapter codes; once etiology is confirmed, transition to I69.x codes
• Underlying suspected etiology codes — when imaging or workup reveals a cause (neoplasm, TBI, etc.), transition from R47.01 to etiology-specific coding at the earliest encounter where the provider documents the confirmed diagnosis

Coding Manifestations

Code all documented associated conditions for full complexity capture:

• R13.10 — Dysphagia, unspecified (confirm specific type when documented: R13.11 oral phase, R13.12 oropharyngeal phase, R13.13 pharyngeal phase, R13.14 pharyngoesophageal phase)
• R41.3 — Other amnesia (when memory impairment is co-documented during aphasia workup)
• G35.D — Multiple sclerosis (if MS is the confirmed etiology — use as primary; R47.01 as additional if aphasia not subsumed)
• F02.811 — Dementia in diseases classified elsewhere with agitation (code first the underlying dementia cause when dementia drives aphasia)

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💰 HCC Risk Adjustment (CMS-HCC v28)

Field	Detail
CMS-HCC Model Version	v28 (Fully operative — Payment Year 2026)
HCC Assignment	❌ Not HCC-Mapped
HCC Category	N/A
RAF Coefficient	N/A — $0.00 risk adjustment contribution

R47.01 does not map to any HCC under CMS-HCC v28. As a symptom code without an established etiology, it carries no RAF coefficient and contributes nothing to the Medicare Advantage risk score.

HCC Opportunity — Never Accept R47.01 When Etiology Is Known

For Medicare Advantage patients, assigning R47.01 when a documented underlying etiology exists is a complete HCC capture failure. The etiology-to-HCC crosswalk for aphasia is:

• Post-stroke aphasia → I69.320 → HCC 100 (~0.273 RAF coefficient)
• Aphasia with active brain malignancy → Primary C71.x code → HCC 10-23 (varies by tumor site)
• Aphasia with dementia → F02.x code first, then underlying condition → HCC 51-52 (dementia HCCs)

Every encounter where aphasia is examined and a known etiology exists is an HCC capture opportunity — do not default to R47.01 for convenience when an etiology-specific code is supported by documentation.

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🏥 MS-DRG Assignment

MDC 23 — Factors Influencing Health Status and Other Contacts with Health Services (when R47.01 is principal)

DRG	Title	Est. Relative Weight*
DRG 951	Other Factors Influencing Health Status with MCC	~1.2-1.5
DRG 952	Other Factors Influencing Health Status with CC	~0.8-1.0
DRG 953	Other Factors Influencing Health Status without CC/MCC	~0.5-0.7

Approximate. Verify against IPPS FY2026 Final Rule tables (CMS v43 MS-DRG Definitions Manual).

R47.01 Rarely — and Should Rarely — Sequence as Inpatient Principal Diagnosis

In clinical practice, an inpatient admission for aphasia alone without an established underlying cause is clinically implausible — a patient admitted with new-onset aphasia will have an acute neurological workup leading to a definitive diagnosis (stroke, hemorrhage, TBI, tumor) that becomes the principal diagnosis. R47.01 as principal diagnosis groups to the low-weight MDC 23 DRG 951/952/953 family, which signals a documentation quality problem rather than a valid principal diagnosis selection. When R47.01 appears as the principal diagnosis in an inpatient record, it should trigger a CDI review to confirm whether an underlying cause was identified during the admission and should be coded instead. As a secondary diagnosis, R47.01 carries no CC or MCC status and does not affect DRG grouping — further underscoring the importance of coding the underlying etiology when known.

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🔗 Related ICD-10-CM Codes

Aphasia by Confirmed Etiology — Etiology-Specific Code Family

Code	Description
R47.01	Aphasia, NOS (unconfirmed etiology) ← This Code
I69.320	Aphasia following cerebral infarction
I69.020	Aphasia following nontraumatic subarachnoid hemorrhage
I69.120	Aphasia following nontraumatic intracerebral hemorrhage
I69.820	Aphasia following other cerebrovascular disease
I69.920	Aphasia following unspecified cerebrovascular disease
G31.01	Primary progressive aphasia (neurodegenerative)

R47 Sibling Codes — Speech and Voice Symptom Family

Code	Description
R47.09	Other dysphasia (partial language impairment, unspecified etiology)
R47.1	Dysarthria and anarthria (motor speech disorder)
R47.81	Slurred speech
R47.89	Other speech disturbances, NEC

Developmental Language Disorders (Excludes 2 — Separately Codeable)

Code	Description
F80.1	Expressive language disorder (developmental)
F80.2	Mixed receptive-expressive language disorder (developmental)
F80.82	Social (pragmatic) communication disorder

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🛠️ Commonly Associated CPT Codes (Speech-Language Pathology / Neurology)

Outpatient and Profee Setting Context

R47.01 is the primary supporting diagnosis for SLP evaluation and treatment services when aphasia etiology has not yet been established. In the outpatient SLP setting, CPT 92523 (evaluation of speech sound production with language evaluation) is the most appropriate initial evaluation code when aphasia is the primary presenting concern; CPT 92507 covers individual treatment. Modifier -GN is required on all SLP Medicare claim lines.

CPT Code	Description	Profee Coding Notes
92523	Evaluation of speech sound production with evaluation of language comprehension and expression	Most appropriate initial SLP evaluation when aphasia affects both expression and comprehension; do not bill same day as 92507 by same provider without separate session documentation
92521	Evaluation of speech fluency	Use when fluency is the primary evaluation focus; less appropriate for primary aphasia presentation
92507	Treatment of speech, language, voice, communication, and/or auditory processing disorder, individual	Primary individual SLP treatment code for aphasia; -GN modifier required for Medicare; -KX modifier when therapy threshold exceeded
92508	Treatment of speech, language, voice, communication, and/or auditory processing disorder, group	Group aphasia therapy (2 or more patients); -GN modifier required
92609	Therapeutic services for use of speech-generating AAC device	When aphasia severity necessitates augmentative and alternative communication (AAC) device training; do not substitute 92507 for AAC services
99214 / 99215	Office or other outpatient visit, established patient, moderate/high complexity	Neurology E/M for aphasia evaluation and management; modifier -25 required when same-day SLP procedure also billed by same provider entity
97129	Therapeutic intervention for cognitive function, initial 15 minutes	When cognitive deficits accompany aphasia and are the primary focus of a separate time block; do not overlap time with 92507

NCCI Bundling Considerations

• 92507 (individual treatment) billed same day as 92523 (evaluation): CMS generally does not expect evaluation and treatment to be billed for the same patient on the same date by the same provider without documentation of separate and clearly distinct sessions. If both are performed on the same date, document separate start and stop times for each service.
• 97129 (cognitive function) billed same session as 92507 (SLP treatment): These codes capture overlapping cognitive-language functions — do not bill for the same time block. Separate time documentation is required when both are billed in the same day.

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🔬 ICD-10-PCS Crosswalk (Inpatient Procedures)

When R47.01 is an inpatient diagnosis (typically transitional — before etiology is confirmed), these PCS codes are relevant for associated inpatient SLP evaluation and treatment procedures.

PCS Section	Body System	Root Operation	Clinical Application
F (Physical Rehab & Diagnostic Audiology)	0 (Rehabilitation)	6 (Speech Treatment)	Individual SLP speech-language treatment for aphasia: F06Z0ZZ — Speech Treatment, Communicative/Cognitive Integration Skills, None
F (Physical Rehab & Diagnostic Audiology)	0 (Rehabilitation)	3 (Motor and/or Nerve Function Assessment)	Language and speech function assessment: F00ZZZZ — Motor and/or Nerve Function Assessment, None
F (Physical Rehab & Diagnostic Audiology)	1 (Diagnostic Audiology)	3 (Hearing Assessment)	Differentiate aphasia from hearing loss affecting comprehension: F13ZZZZ — Hearing Assessment when co-evaluation is needed

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💊 Coding Scenarios and Examples

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Scenario 1 — Emergency Department: New-Onset Aphasia, Etiology Under Investigation

Clinical Vignette: A 61-year-old male presents to the ED with sudden onset inability to speak, reported by his wife as “can’t find words and doesn’t understand me.” CT head is negative for hemorrhage. MRI brain is ordered but results are pending at time of documentation. The ED attending documents: “Acute onset aphasia — differential includes ischemic stroke vs. TIA vs. Todd’s paralysis post-seizure. Stroke team consulted. Workup in progress.” No confirmed diagnosis is established during the ED encounter.

CPT / HCPCS (Profee — ED):

• 99285-25 — ED E/M, high complexity; aphasia with acute neurological presentation supports high complexity MDM; modifier -25 if neurology consultation generates a separate billable service

Primary Diagnosis:

• R47.01 — Aphasia (appropriate at this encounter — etiology is under investigation and not confirmed; no I69.x or other etiology-specific code is yet supported)

Secondary Diagnoses:

• R41.89 — Other cognitive function alterations (if comprehension deficit is separately noted beyond expressive loss)

Note

R47.01 is appropriately used here — the etiology is genuinely unconfirmed at time of coding. If the MRI subsequently confirms acute ischemic stroke and the patient is admitted, the inpatient admission coding should reflect the confirmed diagnosis (I63.x for the acute stroke, not I69.320 — sequela codes are assigned at subsequent encounters, not during the acute event).

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Scenario 2 — Outpatient SLP Clinic: Aphasia Without Documented Stroke Link

Clinical Vignette: A 55-year-old female with a history of left temporal lobe glioblastoma (GBM), status post-resection 8 months ago, presents to outpatient SLP for ongoing aphasia management. The SLP note documents: “Patient presents with Wernicke’s-type aphasia — impaired auditory comprehension with relatively preserved fluent output, paraphasic errors. Continuing individual aphasia treatment.” The referring neurologist’s note in the record documents the GBM diagnosis but does not explicitly link the aphasia to the tumor in the current encounter documentation.

CPT / HCPCS (Profee):

• 92507-GN x1 session — Individual SLP treatment; GN modifier for Medicare SLP plan of care

Primary Diagnosis:

• R47.01 — Aphasia (used here because the current SLP documentation does not link the aphasia to the GBM — a CDI query or cross-reference to the neurologist’s note should be pursued)

Secondary Diagnoses:

• Z85.841 — Personal history of malignant neoplasm of brain (if the GBM is post-treatment and considered in remission/history status)

Warning

This scenario illustrates a missed coding opportunity. The aphasia is almost certainly attributable to the GBM resection — the neurologist’s documentation likely supports this. A CDI query asking the SLP or referring neurologist to explicitly link the aphasia to the GBM would allow coding of the active neoplasm (if still active — C71.x) as the primary diagnosis with R47.01 as an additional code, or appropriate sequela coding. Do not leave R47.01 as the only code when an etiology is clinically evident but undocumented in the current note.

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Scenario 3 — CDI Query: CVA History Present, R47.01 Assigned by Default

Clinical Vignette: A 69-year-old male with a well-documented history of right MCA ischemic stroke 18 months ago presents to a neurology office for a routine follow-up. The neurologist’s note reads: “Patient continues with expressive communication difficulties. Speech therapy ongoing. BP well-controlled.” The coder assigns R47.01 because the note says “communication difficulties” and “speech therapy” without explicitly naming aphasia or linking it to the prior stroke.

Action / Outcome: The patient has a documented prior stroke and is receiving ongoing SLP for expressive communication deficits — the clinical picture strongly supports aphasia as a post-stroke sequela. However, the provider’s note does not use the word “aphasia,” and the causal link to the stroke is not explicitly stated in this encounter. Two CDI queries are appropriate: (1) confirm whether the communication difficulty is aphasia; (2) confirm whether it is a residual sequela of the prior ischemic stroke.

Query Response: Provider updates documentation to confirm: “Expressive aphasia, residual sequela of prior right MCA ischemic stroke — ongoing, unchanged since stroke 18 months ago.”

Corrected ICD-10-CM Coding:

• I69.351 — Hemiplegia following cerebral infarction, right dominant side (if hemiplegia also documented — separately code)
• I69.320 — Aphasia following cerebral infarction (replaces R47.01 entirely — confirmed post-stroke sequela; activates HCC 100)

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⚠️ Coding Pitfalls and Tips

	Pitfall or Tip
❌	Using R47.01 when a cerebrovascular etiology is documented. This is the highest-frequency coding error for this code. When any I69.x cerebrovascular sequela code with final characters -20 (aphasia) applies — most commonly I69.320 — R47.01 is an Excludes 1 violation. The Excludes 1 instruction at R47.01 is absolute: when CVD is the documented cause, the I69.x20 code is assigned and R47.01 is not used. Payers increasingly flag R47.01 on claims where the patient has a documented stroke history.
❌	Coding R47.01 alongside I69.320 for the same aphasia at the same encounter. This is a direct Excludes 1 violation regardless of the clinical rationale. Some coders mistakenly assign both to capture “severity” or “symptom specificity” — this is incorrect and generates NCCI/claim edit risk. Assign the etiology-specific code only.
❌	Defaulting to R47.01 at every SLP encounter for convenience. When an underlying cause has been established in the medical record, the SLP cannot simply use R47.01 for billing purposes — payers compare the SLP claim diagnosis against the medical record’s established diagnoses and will deny or audit claims where a more specific etiology-driven code is supported by documentation but R47.01 was used instead.
✅	Use R47.01 appropriately during the acute workup window. R47.01 is the correct code at an initial ED or acute care encounter when aphasia is the presenting symptom and the underlying cause has not yet been confirmed by provider documentation. Once the cause is established (stroke confirmed on MRI, tumor identified, TBI documented), transition to the etiology-specific code at that same encounter or the next.
✅	Always initiate a CDI query when stroke history is present and R47.01 is the only aphasia code. The query should ask the provider to confirm: (1) Is the patient’s communication difficulty aphasia? (2) Is it causally related to the documented prior stroke? A two-question query with supporting clinical context (imaging findings, SLP documentation) frequently yields a confirmatory response that shifts coding from R47.01 (no HCC) to I69.320 (HCC 100, ~0.273 RAF).
✅	For non-stroke etiologies, use R47.01 as an additional code alongside the primary diagnosis when the primary code does not subsume aphasia. For example, aphasia in a patient with active glioblastoma (C71.x) can be coded with R47.01 as an additional code since the C71.x code does not include or exclude aphasia manifestations. This is distinct from the I69.x family, where the aphasia variant is built into the I69.x20 code structure and R47.01 is explicitly excluded.

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📚 Sources

¹ CMS/NCHS. ICD-10-CM Official Guidelines for Coding and Reporting, FY2026. Section I.C.18 (Symptoms, Signs, and Abnormal Clinical Findings — Codes from Chapter 18 as Principal Diagnosis); Section I.B.5 (Signs and Symptoms).

² CMS. IPPS Final Rule FY2026 — MS-DRG Definitions Manual v43. MDC 23 Other Factors Influencing Health Status, DRG 951/952/953 grouper logic. https://www.cms.gov/icd10m/FY2026-fr-v43-fullcode-cms/fullcode_cms/

³ CMS. 2025-2026 Medicare Advantage Risk Adjustment — CMS-HCC Model v28 ICD-10-CM Mappings. R47.01 confirmed non-HCC-mapped; I69.320 confirmed HCC 100.

⁴ ASHA (American Speech-Language-Hearing Association). 2026 ICD-10-CM Diagnosis Codes Related to Speech, Language, and Hearing. R47.01 tabular notation including Excludes1 reference to I69.- final characters -20. https://www.asha.org/siteassets/uploadedfiles/icd-10-codes-slp.pdf

⁵ Sprypt. “What’s New for Aphasia ICD-10 Code R47.01 in 2025?” R47.01 confirmed billable; usage guidance re: stroke documentation requirements. https://www.sprypt.com/icd-codes/r47-01

⁶ Providers Care Billing. “R47.01 vs I69.320: Coding Aphasia With and Without Stroke.” (2025). Code selection guidance and Excludes 1 explanation. https://providerscarebilling.com/r47-01-vs-i69-320-coding-aphasia-with-and-without-stroke/

⁷ Doctor MGT. “ICD-10 Code R47.01: 2025 Aphasia Billing Updates to Know.” (2026). Payer documentation expectations for R47.01 vs. etiology-specific codes. https://doctormgt.com/icd-10-code-r47-01-aphasia-billing-updates/

⁸ Yung Sidekick. “The Overlooked Connection: R47.01 Aphasia and Mental Health Disorders.” (2025). When to use R47.01 vs. I69.320 or F80.1. https://yung-sidekick.com/blog/the-overlooked-connection-r47-01-aphasia-and-mental-health-disorders

⁹ SimplePractice. “What Is the ICD-10 Code for Aphasia?” (2024). R47.01 scope of use and differentiation from cerebrovascular-specific codes. https://www.simplepractice.com/resource/icd-10-code-aphasia/

¹⁰ AMA. CPT Professional Edition 2026. Speech-Language Pathology subsection — 92507, 92508, 92521, 92523, 92609, 97129.

¹¹ AAPC. “ICD-10-CM Code for Aphasia — R47.01.” https://www.aapc.com/codes/icd-10-codes/R47.01

¹² Unbound Medicine. “R47.01 — Aphasia | ICD-10-CM.” Tabular hierarchy and Excludes1 notation confirmed. https://www.unboundmedicine.com/icd/view/ICD-10-CM/904302/all/R47_01___Aphasia