F03.B4: Unspecified dementia, moderate, with anxiety

F03.B4, unspecified dementia, moderate, with anxiety, is listed as a covered diagnosis in 8 Medicare billing and coding articles that apply to 18 HCPCS Level II codes, including A9552 (Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose…), A9597 (Positron emission tomography radiopharmaceutical…), A9598 (Positron emission tomography radiopharmaceutical…). The articles come from 5 Medicare contractors. A listed diagnosis supports medical necessity only; coverage still depends on the LCD's criteria and on documentation in the medical record.

HCPCS Level II codes with F03.B4 as a covered diagnosis

CodeDescriptionMedicare coverageDMEPOS fee 2026 (state range)Articles listing it
A9552Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose, up to 45 millicuriesCarrier judgment—2
A9597Positron emission tomography radiopharmaceutical, diagnostic, for tumor identification, not otherwise classifiedCarrier judgment—2
A9598Positron emission tomography radiopharmaceutical, diagnostic, for non-tumor identification, not otherwise classifiedCarrier judgment—2
A9601Flortaucipir f 18 injection, diagnostic, 1 millicurieCarrier judgment—2
G0017Psychotherapy for crisis furnished in an applicable site of service (any place of service at which the non-facility rate for psychotherapy for crisis services applies, other than the office setting); first 60 minutesCarrier judgment—3
G0018Psychotherapy for crisis furnished in an applicable site of service (any place of service at which the non-facility rate for psychotherapy for crisis services applies, other than the office setting); each additional 30 minutes (list separately in addition to code for primary service)Carrier judgment—3
G0451Development testing, with interpretation and report, per standardized instrument formCarrier judgment—3
G0560Safety planning interventions, each 20 minutes personally performed by the billing practitioner, including assisting the patient in the identification of the following personalized elements of a safety plan: recognizing warning signs of an impending suicidal or substance use-related crisis; employing internal coping strategies; utilizing social contacts and social settings as a means of distraction from suicidal thoughts or risky substance use; utilizing family members, significant others, caregivers, and/or friends to help resolve the crisis; contacting mental health or substance use disorder professionals or agencies; and making the environment safeCarrier judgment—2
G0152Services performed by a qualified occupational therapist in the home health or hospice setting, each 15 minutesCarrier judgment—1
G0155Services of clinical social worker in home health or hospice settings, each 15 minutesCarrier judgment—1
G0156Services of home health/hospice aide in home health or hospice settings, each 15 minutesCarrier judgment—1
G0299Direct skilled nursing services of a registered nurse (rn) in the home health or hospice setting, each 15 minutesCarrier judgment—1
G0300Direct skilled nursing services of a licensed practical nurse (lpn) in the home health or hospice setting, each 15 minutesCarrier judgment—1
G0410Group psychotherapy other than of a multiple-family group, in a partial hospitalization or intensive outpatient setting, approximately 45 to 50 minutesCarrier judgment—1
G0411Interactive group psychotherapy, in a partial hospitalization or intensive outpatient setting, approximately 45 to 50 minutesCarrier judgment—1
G0219Pet imaging whole body; melanoma for non-covered indicationsNon-covered by MedicareNot covered2
G0235Pet imaging, any site, not otherwise specifiedNon-covered by MedicareNot covered2
G0252Pet imaging, full and partial-ring pet scanners only, for initial diagnosis of breast cancer and/or surgical planning for breast cancer (e.g., initial staging of axillary lymph nodes)Non-covered by MedicareNot covered2

Medicare policy articles listing F03.B4

A diagnosis listed as covered in a billing and coding article supports medical necessity for the article's codes; it does not guarantee payment. Coverage depends on the LCD's criteria, the contractor's jurisdiction and documentation in the medical record.

Other F03 diagnoses (Unspecified dementia)

Frequently asked questions

Does Medicare cover F03.B4 (Unspecified dementia, moderate, with anxiety)?

Medicare covers items and services, not diagnoses. 8 Medicare billing and coding articles list F03.B4 as a covered diagnosis for 18 HCPCS Level II codes: the diagnosis can support medical necessity for those codes, but payment still depends on the LCD's coverage criteria and the medical record.

Which HCPCS codes can be billed with ICD-10 F03.B4?

The Level II codes from the policies most specific to this diagnosis are A9552 (Fluorodeoxyglucose f-18 fdg, diagnostic, per study dose…, 2 articles); A9597 (Positron emission tomography radiopharmaceutical…, 2 articles); A9598 (Positron emission tomography radiopharmaceutical…, 2 articles); A9601 (Flortaucipir f 18 injection, diagnostic, 1 millicurie, 2 articles); G0017 (Psychotherapy for crisis furnished in an applicable site…, 3 articles). Code choice depends on the item supplied; check each code's descriptor.

Which Medicare policy articles list F03.B4?

A53134 (Billing and Coding: NCD Coding Article for Positron Emission Tomography (PET) Scans Used for Non-Oncologic Conditions); A59049 (Billing and Coding: NCD Coding Article for Positron Emission Tomography (PET) Scans Used for Non-Oncologic Conditions); A57520 (Billing and Coding: Psychiatric Diagnostic Evaluation and Psychotherapy Services), and 5 more articles.

What is ICD-10-CM code F03.B4?

F03.B4 is the ICD-10-CM code for unspecified dementia, moderate, with anxiety, in category F03 (Unspecified dementia), chapter 5: Mental, behavioral and neurodevelopmental disorders.

Next steps

Sources: CMS Medicare Coverage Database billing and coding articles (covered ICD-10 code lists and HCPCS links); ICD-10-CM FY2026; CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026 (non-rural state fees). Not billing or legal advice.

Chapter 5: Mental, behavioral and neurodevelopmental disorders · All diagnoses · HCPCS lookup