US · guidance
CMS Pub. 100-04, ch. 12, § 210.1
Application of the Limitation
A. Status of Patient
The limitation is applicable to expenses incurred in connection with the
treatment of an individual who is not an inpatient of a hospital. Thus,
the limitation applies to mental health services furnished to a person in
a physician’s office, in the patient’s home, in a skilled nursing facility,
as an outpatient, and so forth. The term “hospital” in this context
means an institution, which is primarily engaged in providing to
inpatients, by or under the supervision of a physician(s):
• Diagnostic and therapeutic services for medical diagnosis, treatment and
care of injured, disabled, or sick persons;
• Rehabilitation services for injured, disabled, or sick persons; or
• Psychiatric services for the diagnosis and treatment of mentally ill
patients.
B. Disorders Subject to the Limitation
The term “mental, psychoneurotic, and personality disorders” is defined
as the specific psychiatric diagnoses described in the International
Classification of Diseases, 9th Revision (ICD-9), under the code range
290-319.
When the treatment services rendered are both for a psychiatric
diagnosis as defined in the ICD-9 and one or more nonpsychiatric
conditions, separate the expenses for the psychiatric aspects of
treatment from the expenses for the nonpsychiatric aspects of
treatment. However, in any case in which the psychiatric treatment
component is not readily distinguishable from the nonpsychiatric
treatment component, all of the expenses are allocated to whichever
component constitutes the primary diagnosis.
1. Diagnosis Clearly Meets Definition - If the primary diagnosis reported for
a particular service is the same as or equivalent to a condition described in the
ICD9 under the code range 290-319 that represents mental, psychoneurotic and
personality disorders, the expense for the service is subject to the limitation except
as described in subsection D.
2. Diagnosis Does Not Clearly Meet Definition - When it is not clear
whether the primary diagnosis reported meets the definition of mental,
psychoneurotic, and personality disorders, it may be necessary to contact the
practitioner to clarify the diagnosis. In deciding whether contact is necessary in a
given case, give consideration to such factors as the type of services rendered, the
diagnosis, and the individual’s previous utilization history.
C. Services Subject to the Limitation
A/B MACs (B) must apply the limitation to claims for professional
services that represent mental health treatment furnished to individuals
who are not hospital inpatients by physicians, clinical psychologists,
clinical social workers, nurse practitioners, clinical nurse specialists
and physician assistants. Items and supplies furnished by physicians
or other mental health practitioners in connection with treatment are
also subject to the limitation.
Generally, A/B MACs (B) must apply the limitation only to treatment
services. However, diagnostic psychological and neuropsychological
testing services performed to evaluate a patient’s progress during
treatment are considered part of treatment and are subject to the
limitation.
D. Services Not Subject to the Limitation
1. Diagnosis of Alzheimer’s Disease or Related Disorder - When the primary
diagnosis reported for a particular service is Alzheimer’s Disease or an Alzheimer’s
related disorder, A/B MACs (B) must look to the nature of the service that has been
rendered in determining whether it is subject to the limitation. Alzheimer’s disease
is coded 331.0 in the “International Classification of Diseases, 9th Revision”, which
is outside the code range 290-319 that represents mental, psychoneurotic and
personality disorders. Additionally, Alzheimer’s related disorders are identified by
A/B MACs (B) under ICD-9 codes that are within the 290-319 code range
(290.XX or others as A/B MACs (B) determine appropriate) or outside the 290-319
code range as determined appropriate by A/B MACs (B). When the primary
treatment rendered to a patient with a diagnosis of Alzheimer’s disease or a related
disorder is psychotherapy, it is subject to the limitation. However, typically,
treatment provided to a patient with a diagnosis of Alzheimer’s Disease or a related
disorder represents medical management of the patient’s condition (such as
described under CPT code 90862 or any successor code) and is not subject to the
limitation. CPT code 90862 describes pharmacologic management, including
prescription, use, and review of medication with no more than minimal medical
psychotherapy.
2. Brief Office Visits for Monitoring or Changing Drug Prescriptions - Brief
office visits for the sole purpose of monitoring or changing drug prescriptions used
in the treatment of mental, psychoneurotic and personality disorders are not subject
to the limitation. These visits are reported using HCPCS code M0064 or any
successor code (brief office visit for the sole purpose of monitoring or changing
drug prescriptions used in the treatment of mental, psychoneurotic, and personality
disorders). Claims where the diagnosis reported is a mental, psychoneurotic, or
personality disorder (other than a diagnosis specified in subsection A) are subject
to the limitation except for the procedure identified by HCPCS code M0064 or any
successor code.
3. Diagnostic Services - A/B MACs (B) do not apply the limitation to
psychiatric diagnostic evaluations and diagnostic psychological and
neuropsychological tests performed to establish or confirm the patient’s diagnosis.
Diagnostic services include psychiatric diagnostic evaluations billed under CPT
codes 90801 or 90802 (or any successor codes) and, psychological and
neuropsychological tests billed under CPT code range 96101-96118 (or any
successor code range).
An initial visit to a practitioner for professional services often combines diagnostic
evaluation and the start of therapy. Such a visit is neither solely diagnostic nor
solely therapeutic. Therefore, A/B MACs (B) must deem the initial visit to be
diagnostic so that the limitation does not apply. Separating diagnostic and
therapeutic components of a visit is not administratively feasible, unless the
practitioner already has separately identified them on the bill. Determining the
entire visit to be therapeutic is not justifiable since some diagnostic work must be
done before even a tentative diagnosis can be made and certainly before therapy
can be instituted. Moreover, the patient should not be disadvantaged because
therapeutic as well as diagnostic services were provided in the initial visit. In the
rare cases where a practitioner’s diagnostic services take more than one visit, A/B
MACs (B) must not apply the limitation to the additional visits. However, it is
expected such cases are few. Therefore, when a practitioner bills for more than
one visit for professional diagnostic services, A/B MACs (B) may find it necessary
to request documentation to justify the reason for more than one diagnostic visit.
4. Partial Hospitalization Services Not Directly Provided by a Physician or a
Practitioner - The limitation does not apply to partial hospitalization services that
are not directly provided by a physician, clinical psychologist, nurse practitioner,
clinical nurse specialist, or a physician assistant. Partial hospitalization services
are billed by hospital outpatient departments and community mental health centers
(CMHCs) to A/B MACs (A). However, services furnished by physicians, clinical
psychologists, nurse practitioners, clinical nurse specialists, and physician
assistants to partial hospitalization patients are billed separately from the partial
hospitalization program of services. Accordingly, these professional’s mental
health services to partial hospitalization patients are paid under the physician fee
schedule by A/B MACs (B) and may be subject to the limitation. (See chapter 4,
section 260.1C).
5. Intensive Outpatient Services Not Directly Provided by a Physician or a
Practitioner - The limitation does not apply to intensive outpatient services that are
not directly provided by a physician, clinical psychologist, nurse practitioner,
clinical nurse specialist, or a physician assistant. Intensive outpatient services are
billed by hospital outpatient departments, community mental health centers
(CMHCs), RHCs, FQHCs, and OTPs to A/B MACs (A). However, services
furnished by physicians, clinical psychologists, nurse practitioners, clinical nurse
specialists, and physician assistants to intensive outpatient patients are billed
separately from the intensive outpatient program of services. Accordingly, these
professional’s mental health services to intensive outpatient patients are paid under
the physician fee schedule by A/B MACs (B) and may be subject to the limitation.
(See chapter 4, section 261.1C).
E. Computation of Limitation
A/B MACs (B) determine the Medicare approved payment amount
for services subject to the limitation. They:
• Multiply the approved amount by the limitation percentage amount;
• Subtract any unsatisfied deductible; and,
• Multiply the remainder by 0.8 to obtain the amount of Medicare payment.
The beneficiary is responsible for the difference between the amount paid by
Medicare and the full Medicare approved amount.
The following examples illustrate the application of the limitation in
various circumstances as it is gradually reduced under section 102 of
the Medicare Improvements for Patients and Providers Act (MIPPA).
Please note that although the calendar year 2009 Part B deductible of
$135 is used under these examples, the actual deductible amount for
calendar year 2010 and future years is unknown and will be subject to
change.
Example #1: In 2010, a clinical psychologist submits a claim for $200
for outpatient treatment of a patient’s mental disorder. The Medicare-approved amount is $180. Since clinical psychologists must accept
assignment, the patient is not liable for the $20 in excess charges. The
patient previously satisfied the $135 annual Part B deductible. The
limitation reduces the amount of incurred expenses to 68 ¾ percent of
the approved amount. Medicare pays 80 percent of the remaining
incurred expenses. The Medicare payment and patient liability are
computed as follows:
1. Actual charges……………………………………….…….$200.00
2. Medicare-approved amount……… ………….…….……$180.00
3. Medicare incurred expenses (0.6875 x line 2)……..……...$123.75
4. Unmet deductible………………………………………..…$0.00
5. Remainder after subtracting deductible (line 3 minus line 4)..$123.75
6. Medicare payment (0.80 x line 5)………………………….$99.00
7. Patient liability (line 2 minus line 6)……………………….$81.00
Example #2: In 2012, a clinical social worker submits a claim for $135
for outpatient treatment of a patient’s mental disorder. The Medicare-approved amount is $120. Since clinical social workers must accept
assignment, the patient is not liable for the $15 in excess charges. The
limitation reduces the amount of incurred expenses to 75 percent of the
approved amount. The patient previously satisfied $70 of the $135
annual Part B deductible, leaving $65 unmet. The Medicare payment
and patient liability are computed as follows:
1. Actual charges…………………………………….….$135.00
2. Medicare-approved am………………….……….......$120.00
3. Medicare incurred expenses (0.75 x line……..……….$90.00
4. Unmet deductible…………………………..………….$65.00
5. Remainder after subtracting deductible (line 3 minus line
6. Medicare payment (0.80 x line ………………………...$20.00
7. Patient liability (line 2 minus line 6)……………..........$100.00
Example #3: In calendar year 2013, a physician who does not accept
assignment submits a claim for $780 for services in connection with
the treatment of a mental disorder that did not require inpatient
hospitalization. The Medicare-approved amount is $750. Because the
physician does not accept assignment, the patient is liable for the $30
in excess charges. The patient has not satisfied any of the $135 Part B
annual deductible. The Medicare payment and patient liability are
computed as follows:
1. Actual charges.………………………………….$780.00
2. Medicare-approved amount……………………..$750.00
3. Medicare incurred expenses (0.8125 x line 2…....$609.38
4. Unmet deductible…… …………………………..$135.00
5. Remainder after subtracting deductible (line 3 minus line 4
6. 4)……………...$474.38
7. Medicare payment (0.80 x line 5) ……….……….$379.50
8. Patient liability (line 1 minus line 6)………… …$400.50
Example #4: A patient’s Part B expenses during calendar year
2014 are for a physician’s services in connection with the
treatment of a mental disorder that initially required inpatient
hospitalization, with subsequent physician services furnished on
an outpatient basis. The patient has not satisfied any of the $135
Part B deductible. The physician accepts assignment and
submits a claim for $780. The Medicare-approved amount is
$750. Since the limitation will be completely phased out as of
January 1, 2014, the entire $750 Medicare-approved amount is
recognized as the total incurred expenses because such expenses
are no longer reduced. Also, there is no longer any distinction
between mental health services the patient receives as an
inpatient or outpatient. The Medicare payment and patient
liability are computed as follows:
1. Actual charges…………………………………………………..$780.00
2. Medicare-approved amount……………………………………..$750.00
3. Medicare incurred expenses (1.00 x line………… …………..$750.00
4. Unmet deductible… …………………………………………..$135.00
5. Remainder after subtracting deductible (line 3 minus line 4)…..$615.00
6. Medicare payment (0.80 x line 5)……………………………….$492.00
7. Beneficiary liability (line 2 minus line 6)……………………….$258.00
History
(Rev. 12423; Issued: 12-20-23; Effective: 01-01-24; Implementation: 01-02-24)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
46aad3e196c13ce21d847efc10925027215dd40651be5e91d582ff8496fb4b2c
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