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LCD L33580: Speech-Language Pathology

LCD L33580, Speech-Language Pathology, is the Local Coverage Determination that Wellpoint Federal applies to claims from 13 states (CT, DN, IL, MA, ME, MN, NH, NY and others), effective 2026-04-01 and first in force 2015-10-01. The policy text runs 1,489 words, and its billing and coding article A52866 lists 169 ICD-10-CM codes that support medical necessity for 21 procedure codes. 2 other contractors publish a policy with the same title, so the criteria that apply depend on where the service is furnished.

QuickIntell editorial content · Legacy registry date · Review not verified

Data effective
Data currency: Medicare Coverage Database LCD export release of September 24, 2026 (effective September 20, 2026). Next CMS release: weekly (Thursdays) for the MCD.
Contractor
Wellpoint Federal
States and territories
13
CT DN IL MA ME MN NH NY QN RI UN VT WI
Revision effective
2026-04-01
Original effective
2015-10-01
Policy text
1,489 words
Covered ICD-10 codes (articles)
169

Where this LCD applies

Each contract number is a jurisdiction on the remittance; the policy binds claims processed under these contracts and no others.

Contracts that apply LCD L33580
ContractContractorTypeStates
06101Wellpoint FederalMAC - Part AIL
06201Wellpoint FederalMAC - Part AMN
06301Wellpoint FederalMAC - Part AWI
06102Wellpoint FederalMAC - Part BIL
06202Wellpoint FederalMAC - Part BMN
06302Wellpoint FederalMAC - Part BWI
13101Wellpoint FederalA and B and HHH MACCT
13201Wellpoint FederalA and B and HHH MACNY
13102Wellpoint FederalA and B and HHH MACCT
13202Wellpoint FederalA and B and HHH MACDN
13282Wellpoint FederalA and B and HHH MACUN
13292Wellpoint FederalA and B and HHH MACQN
14411Wellpoint FederalA and B and HHH MACRI
14211Wellpoint FederalA and B and HHH MACMA
14311Wellpoint FederalA and B and HHH MACNH
14511Wellpoint FederalA and B and HHH MACVT
14111Wellpoint FederalA and B and HHH MACME
14112Wellpoint FederalA and B and HHH MACME
14212Wellpoint FederalA and B and HHH MACMA
14312Wellpoint FederalA and B and HHH MACNH
14512Wellpoint FederalA and B and HHH MACVT
14412Wellpoint FederalA and B and HHH MACRI

Billing and coding: diagnoses and procedure codes

Since 2019 the codes live in the companion article rather than the LCD. Billing and Coding A52866 (Billing and Coding: Speech-Language Pathology) carries the diagnosis and procedure lists the contractor loads as the claims edit. CPT codes are shown as bare numbers because the descriptors are licensed by the AMA; HCPCS Level II descriptors are public and shown.

A52866: Billing and Coding: Speech-Language Pathology (Billing and Coding, effective 2026-04-01)

Covered ICD-10-CM codes
169
1 group
Non-covered ICD-10-CM codes
0
Procedure codes listed
21
Full article
cms.gov record
First 24 covered ICD-10-CM codes in A52866
ICD-10-CMDescription (FY2027)
F80.0—
F80.1—
F80.2—
F80.4—
F80.81—
F80.89—
F81.0—
F81.2—
F81.81—
F81.89—
F82Specific developmental disorder of motor function
F88Other disorders of psychological development
F98.5—
G52.1—
G52.2—
G52.3—
G52.7—
G52.8—
G60.8—
H90.0—
H90.11—
H90.12—
H90.3—
H90.41—

Procedure codes: 31579, 92507, 92508, 92521, 92522, 92523, 92524, 92597, 92607, 92608, 92609, 92626, 92627, 96105, 96110, 96112, 96113, 97129, 97130, 97533, G0451 (Development Testing, With Interpretation And Report, Per Standardized Instrument Form).

Coverage indications, limitations and medical necessity

Abstract:

This Local Coverage Determination (LCD) describes the coverage and limits of coverage for speech and language pathology therapy services when billed to either the Medicare Part A or Part B. This LCD shall not be construed to expand coverage to services defined as non-covered by National Coverage Determinations (NCDs).

Definitions:

Rehabilitative therapy includes services designed to address recovery or improvement in function and, when possible, restoration to a previous level of health and well-being. (CMS Publication 100-02, Medicare Benefit Policy Manual , Chapter 15, Section 220.2(C)) and 220.3

MAINTENANCE PROGRAM (MP) means a program established by a therapist that consists of activities and/or mechanisms that will assist a beneficiary in maximizing or maintaining the progress he or she has made during therapy or to prevent or slow further deterioration due to a disease or illness. (CMS Publication 100-02 , Medicare Benefit Policy Manual, Chapter 15, Section 220 (A))

Indications:

Speech-language pathology services may be considered reasonable and necessary when the criteria in this LCD, as well as the National Coverage provisions listed in the related Billing and Coding Article, are met. (Please refer the Billing and Coding Article A52866)

Evaluation of Language Disorders:

The order or referral for the evaluation and any specific testing in areas of concern should be designated by the referring physician in consultation with an SLP. The physician's certification of the need for care (e.g., approval of the plan of care) may substitute for the order. The documentation of the evaluation or re-evaluation by the SLP should demonstrate that an actual hands-on assessment occurred to support the medical necessity for reimbursement of the evaluation or re-evaluation. The documentation should differentiate between evaluation or re-evaluation and screening. Screening assessments are noncovered and should not be billed. The initial screening assessments of patients or regular routine reassessments of patients are not covered. Evaluations in the absence of signs and symptoms are not covered.

The evaluation should include the beneficiary's history and the onset or exacerbation date of the current disorder. The history in conjunction with the current symptoms must establish support for additional treatment. Prior level of functioning should be documented, as well as current baseline abilities, to establish the basis for the therapeutic interventions. Evaluations must include the plan, goals (realistic, long-term, functional, communication goals) duration of therapy, frequency of therapy, and definition of the type of service. Diagnostic and assessment testing services to ascertain the type, causal factor(s) and severity of speech and language disorders, should be identified during the evaluation.

For information on Re-evaluations please refer to the related Billing and Coding Article.

Documentation is expected to support the ability of the beneficiary to learn and retain instruction. Absence of such documentation may result in a denial of services. If the patient has questionable cognitive skills, a brief cognitive-communication assessment should be performed in order to establish the patient's learning ability. The brief cognitive assessment may also determine the need for more comprehensive cognitive performance testing.

For additional information on Medicare requirements for PT, OT, and Speech-Language Pathology evaluation and re-evaluation of services see CMS Publication 100-02, Medicare Benefit Policy Manual, Chapter 15, Section 220.

Skilled Procedures and Modalities:

Skilled procedures include:

• Design of a treatment program addressing the beneficiary's disorder. Continued assessment and analysis during the implementation of the services is expected at regular intervals.

• Establishment of compensatory skills for communication (e.g., air injection techniques or word finding strategies).

• Establishment of a hierarchy of speech-language tasks and cueing hat directs a beneficiary toward communication goals.

• Analysis of actual progress toward goals.

• Establishment of treatment goals specific to speech dysfunction and designed to specifically address each problem identified in initial assessment.

• The selection and initial training of a device for augmentative or alternative communication systems.

• Patient and family training to augment restorative treatment or to establish a maintenance program. Education of staff and family must begin at the time of evaluation.

Documentation is expected to support the ability of the beneficiary to learn and retain instruction. Absence of such documentation may result in a denial of services. If the patient has questionable cognitive skills, a brief cognitive-communication assessment should be performed in order to establish the patient's learning ability. The brief cognitive assessment may also determine the need for more comprehensive cognitive performance testing.

Aural Rehabilitation:

Coverage for speech reading is only allowed with documentation that supports a loss of hearing sensitivity that cannot be corrected with a hearing aid or amplification. Documentation should also support visual acuity of the beneficiary sufficient to participate in aural rehabilitation.

Speech reading is considered medically necessary when determined by a licensed audiologist that the use of a hearing aid or other amplification would not significantly improve the beneficiary's understanding of speech. Speech reading training is not medically necessary for beneficiaries who refuse to wear a hearing aid. Routine screening for hearing acuity or evaluations aimed at the use of hearing aids is not a covered service.

Determination of the medical necessity for the speech reading will be based on the following criteria:

• Documentation of basic hearing evaluation and audiogram;

• Documentation identifying type and extent of hearing loss;

• Documentation of adequate cognitive and memory skills;

• Documentation that visual acuity, with glasses if applicable, is sufficient to allow the beneficiary to participate in the therapy;

• Documentation of the beneficiary's motivation to participate in therapy in order to improve understanding of speech.

See CMS Publication 100-02, Medicare Benefit Policy Manual , Chapter 15, Section 230.3.D.3 and the related Billing and Coding Article for more information on aural rehabilitation.

Group Therapy:

Group therapy sessions must meet the individualized plan of treatment requirement and are not subject to reimbursement if these criteria are not met. Group therapy coverage for speech reading can be covered (if medically justified) if the following criteria are met:

• Services are rendered under an individualized plan of care

• The group has no more than four group members

• Group therapy does not represent the entire plan of treatment

Laryngoscopy, flexible or rigid fiberoptic, with stroboscopy

This procedure may be used for assessing voice production and vocal function. It may be performed by qualified speech-language pathologists.

Speech-language pathologists should have evidence that they meet the ASHA (American Speech-Language—Hearing Association) training requirements as outlined in the ASHA's Training Guidelines for Laryngeal Videoscopy/Stroboscopy .

Limitations:

Following are some examples of interventions which would generally be considered non-skilled and therefore not covered under Medicare:

• Non-diagnostic, non-therapeutic, routine, repetitive and reinforcing procedures (e.g., the practicing of word drills without skilled feedback).

• Procedures which are repetitive and/or that reinforce previously learned material which the beneficiary, staff or family may be instructed to repeat.

• Procedures which may be effectively carried out with the beneficiary by any non-professional (family or restorative aide) after instruction is completed.

• Services rendered by a SLP assistant or aide.

• Provision of practice for use of augmentative or alternative communication systems after being taught their use.

• Although speech-language pathologists may perform laryngoscopy for the assessment of voice production and vocal function, laryngoscopy for medical diagnostic purposes must be performed by a physician.

Generally, group therapy sessions, except as specified above, are not covered. Group therapy sessions in social organizations such as the stroke club or lost cord club are not covered. See the "Indications" section above for information on when group therapy might be covered.

Speech-language pathology services provided for chronic disorders of memory and orientation are covered services when significant functional progress is demonstrated at early stages of the disorder. When functional progress plateaus, the development of a maintenance program, including training of caregivers and family members is covered.

Preparation of memory aids such as memory books, memory boards, or communication books may be covered. Supervision of the use of such aids is not covered as these services do not require the skills of a qualified therapist.

All SLP services provided by anyone other than an SLP who is licensed or otherwise authorized by the State in which they practice, including a speech-language pathology assistant or aide, are not covered.

The following disorders are typically non-covered for the geriatric Medicare beneficiary:

• Fluency disorder

• Conceptual handicap

• Dysprosody

• Stuttering and cluttering (except neurogenic stuttering caused by acquired brain damage)

• Myofunctional disorders, e.g., tongue thrust

Speech-language pathology is considered medically appropriate treatment for individuals with mental retardation when comorbid disorders such as aphasia or dysarthria are exhibited.

Speech therapy interventions to instruct the beneficiary in English phrases, who has a primary language other than English, are not covered. However, when the primary language of the beneficiary is other than English, speech therapy interventions in the patient's primary language will be covered within the parameters of this LCD.

Other Comments:

There may be rare cases of children who fall under criteria specified in this LCD. Claims for services rendered to children may be covered and approved upon individual consideration.

Summary of evidence (opening)

N/A

the full summary and analysis of evidence are in the CMS record.

Dates, lineage and related policies

Original determination effective
2015-10-01
Current revision effective
2026-04-01
Last reviewed by the contractor
2016-12-22
MCD version
41
Derived from
L27404

The contractor lists 4 National Coverage Determinations as related: NCD 170.2 Melodic Intonation Therapy, NCD 170.3 Speech-Language Pathology Services for the Treatment of Dysphagia, NCD 50.1 Speech Generating Devices, NCD 50.2 Electronic Speech Aids. Where an NCD speaks, it controls; the LCD can only address what the NCD leaves open.

Using this policy on a claim

Match the documented indication to the covered indications above before the service is scheduled, carry a diagnosis from the article's covered list on the claim line, and keep the elements the documentation section asks for in the record, because the contractor can request it later through medical review. A denial under this policy arrives as CARC 50 with remark N115; the LCD lookup guide walks through the appeal path and the Advance Beneficiary Notice rules, and the Wellpoint Federal hub lists every other active policy from the same contractor.

The same policy title at other contractors

Contractors often adopt each other's policies and then revise them separately, so the criteria and the diagnosis lists drift apart. The topic comparison lines up every version.

Frequently asked questions

What does LCD L33580 cover?

This Local Coverage Determination (LCD) describes the coverage and limits of coverage for speech and language pathology therapy services when billed to either the Medicare Part A or Part B. This LCD shall not be construed to expand coverage to services defined as non-covered by National Coverage Determinations (NCDs). The full indications and limitations are reproduced on this page from the CMS Medicare Coverage Database export of September 24, 2026.

Which states does LCD L33580 apply to?

Wellpoint Federal applies it to Medicare claims in CT, DN, IL, MA, ME, MN, NH, NY, QN, RI, UN, VT, WI. A Local Coverage Determination binds only the contractor that wrote it; the same service in another jurisdiction is judged under that contractor's own policy or, where none exists, claim by claim.

Which diagnosis codes support medical necessity under LCD L33580?

The companion billing and coding article A52866 lists 169 ICD-10-CM codes in 1 group that support medical necessity; the first 24 appear on this page and the complete list is in the article on cms.gov.

How do I appeal a denial under LCD L33580?

The remittance carries claim adjustment reason code 50 with remark code N115, naming the LCD. Compare the documented indication with the policy's covered indications and the article's diagnosis list, then file a redetermination within 120 days with the record attached; if the service genuinely falls outside the policy, the patient can be billed only when a valid Advance Beneficiary Notice was obtained before the service.

Sources

Every figure on this page is taken from the CMS publications below, as released by the Centers for Medicare & Medicaid Services. Projection built 2026-10-02. Verify against the primary file before billing or contracting decisions.

Disclaimer

The policy text and code lists are reproduced from the CMS Medicare Coverage Database export as an operational reference. Verify against the current LCD and article on cms.gov before billing; coverage depends on the full record and the contractor. Not legal, clinical or billing advice.