Billing and Coding: Psychiatric Inpatient Hospitalization

This article gives guidance for billing, coding, and other guidelines in relation to local coverage policy L34183-Psychiatric Inpatient Hospitalization. General Guidelines for Claims submitted to Part A or Part B MAC: Procedure codes may be subject to National Correct Coding Initiative (NCCI) edits or OPPS packaging edits. Refer to NCCI and OPPS requirements prior to billing Medicare. For services requiring a referring/ordering physician, the name and NPI of the referring/ordering physician must be reported on the claim. A claim submitted without a valid ICD-10-CM diagnosis code will be returned to the provider as an incomplete claim under Section 1833(e) of the Social Security Act. The diagnosis code(s) must best describe the patient's condition for which the service was performed. For diagnostic tests, report the result of the test if known; otherwise the symptoms prompting the performance of the test should be reported. Advance Beneficiary Notice of Non-coverage (ABN) Modifier Guidelines An ABN may be used for services which are likely to be non-covered, whether for medical necessity or for other reasons. Refer to CMS Publication 100-04, Medicare Claims Processing Manual, Chapter 30, for complete instructions. Effective from April 1, 2010, non-covered services should be billed with modifier –GA, -GX, -GY, or –GZ, as appropriate. The –GA modifier (“Waiver of Liability Statement Issued as Required by Payer Policy”) should be used when physicians, practitioners, or suppliers want to indicate that they anticipate that Medicare will deny a specific service as not reasonable and necessary and they do have an ABN signed by the beneficiary on file. Modifier GA applies only when services will be denied under reasonable and necessary provisions, sections 1862(a)(1), 1862(a)(9), 1879(e), or 1879(g) of the Social Security Act. Effective April 1, 2010, Part A MAC systems will automatically deny services billed with modifier GA. An ABN, Form CMS-R-131, should be signed by the beneficiary to indicate that ‎he/she accepts responsibility for payment.‎ The -GA modifier may also be used on assigned claims when a patient refuses to sign the ABN and the latter is properly witnessed. For claims submitted to the Part A MAC, occurrence code 32 and the date of the ABN is required. Modifier GX (“Notice of Liability Issued, Voluntary Under Payer Policy”) should be used when the beneficiary has signed an ABN, and a denial is anticipated based on provisions other than medical necessity, such as statutory exclusions of coverage or technical issues. An ABN is not required for these denials, but if non-covered services are reported with modifier GX, will automatically be denied services. The –GZ modifier should be used when physicians, practitioners, or suppliers want to indicate that they expect that Medicare will deny an item or service as not reasonable and necessary and they have not had an ABN signed by the beneficiary. ‎If the service is statutorily non-covered, or without a benefit category, submit the ‎appropriate CPT/HCPCS code with the -GY modifier. An ABN is not required for these denials, and the limitation of liability does not apply for beneficiaries. Services with modifier GY will automatically deny. Documentation Requirements The patient’s medical record should include but is not limited to: The assessment of the patient by the ordering provider as it relates to the complaint of the patient for that visit, Relevant medical history Results of pertinent tests/procedures Signed and dated office visit record/operative report (Please note that all services ordered or rendered to Medicare beneficiaries must be signed.) General Documentation Requirements: Documentation that supports medical necessity and active treatment may take many forms. These documentation requirements are intended to help providers identify those documentation elements that will best support the medical necessity of the services they render. It is not expected that every item of these documentation requirements will appear in every record. Upon medical review, the IPF record will be reviewed as a whole, and services may be denied only if there is insufficient documentation to support the medical necessity of the claim. The patient's medical record must contain documentation that fully supports the medical necessity for services included within this LCD. (See "Indications and Limitations of Coverage.") This documentation includes, but is not limited to, relevant medical history, physical examination, and results of pertinent diagnostic tests or procedures. Inpatient Psychiatric Facility Services Certification and Recertification Requirements: The requirements for physician certification and recertification for inpatient psychiatric facility services are similar to the requirements for certification and recertification for inpatient hospital services. However, there is an additional certification requirement. In accordance with 42 CFR 424.14, all IPFs (distinct part units of acute care hospitals, CAHs, and psychiatric hospitals) are required to meet the following certification and recertification requirements. At the time of admission or as soon thereafter as is reasonable and practicable, a physician (the admitting physician or a medical staff member with knowledge of the case) must certify the medical necessity for inpatient psychiatric hospital services. The first recertification is required as of the 12th day of hospitalization. Subsequent recertifications will be required at intervals established by the hospital’s utilization review committee (on a case-by-case basis), but no less frequently than every 30 days. There is also a difference in the content of the certification and recertification statements. The required physician's statement should certify that the inpatient psychiatric facility admission was medically necessary for either: (1) treatment which could reasonably be expected to improve the patient's condition, or (2) diagnostic study. The physician's recertification should state: That inpatient psychiatric hospital services furnished since the previous certification or recertification were, and continue to be, medically necessary for either: Treatment which could reasonably be expected to improve the patient's condition; Diagnostic study; The hospital records indicate that the services furnished were either intensive treatment services, admission and related services necessary for diagnostic study, or equivalent services, and Effective July 1, 2006, physicians will also be required to include a statement recertifying that the patient continues to need, on a daily basis, active treatment furnished directly by or requiring the supervision of inpatient psychiatric facility personnel. For convenience, the period covered by the physician's certification and recertification is referred to a period during which the patient was receiving active treatment. If the patient remains in the hospital but the period of "active treatment" ends (e.g., because the treatment cannot reasonably be expected to improve the patient's condition, or because intensive treatment services are not being furnished), program payment can no longer be made even though the patient has not yet exhausted his/her benefits. Where the period of "active treatment" ends, the physician is to indicate the ending date in making his recertification. If "active treatment" thereafter resumes, the physician should indicate, in making his recertification, the date on which it resumed (CMS Publication 100-01, Medicare General Information, Eligibility, and Entitlement Manual , Chapter 4, Section 10.9) Initial Psychiatric Evaluation: The initial psychiatric evaluation with medical history and physical examination should be performed within 24 hours of admission, but in no case later than 60 hours of admission, in order to establish medical necessity for psychiatric inpatient hospitalization services. In order to support the medical necessity of admission, the documentation in the initial psychiatric evaluation should include, whenever available, the following items: Patient’s chief complaint; Description of acute illness or exacerbation of chronic illness requiring admission; Current medical history, including medications and evidence of failure at or inability to benefit from a less intensive, outpatient program; Past psychiatric and medical history; History of substance abuse; Family, vocational and social history; Mental status examination, including general appearance and behavior, orientation, affect, motor activity, thought content, long and short term memory, estimate of intelligence, capacity for self harm and harm to others, insight, judgment, capacity for activities of daily living (ADLs); Physical examination; Formulation of the patient’s status, including an assessment of the reasonable expectation that the patient will make timely and significant practical improvement in the presenting acute symptoms as a result of the psychiatric inpatient hospitalization services; and ICD-10-CM/ DSM-IV-TR™ diagnoses, including all five axes of the multiaxial assessment as described in the DSM-IV-TR™. A team approach may be used in developing the initial psychiatric evaluation and the plan of treatment (see “Plan of Treatment” section below), but the physician (MD/DO) must personally document the mental status examination, physical examination, diagnosis, and certification. It will not always be possible to obtain all the suggested information at the time of evaluation. In such cases, the limited information that is obtained and documented, must still be sufficient to support the need for an inpatient level of care. Physician Orders: Physician orders should include, but are not limited to, the following items: The types of psychiatric and medical therapy services and medications; Laboratory and other diagnostic testing; Allergies; Provisional diagnosis(es); and Types and duration of precautions (e.