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    v1.0.30
    OpenPayerBilling CodesPreventive Medicine, Group CounselingCPT cpt-99418-inpatient-observation-additional-evaluation-time
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    CPT 99418: Inpatient/Observation Prolonged E/M Time, per 15 Minutes

    CPT code 99418 describes additional physician or qualified health professional time spent on an inpatient or observation evaluation and management service, billed for each extra 15 minutes beyond the minimum required time; service type: prolonged inpatient/observation E/M time, typical site of service: inpatient hospital or observation unit.

    For related coverage guidance, see recent payer policy updates: Percutaneous Electrical Nerve Field Stimulation for Functional Abdominal Pain Disorders, Esophagogastroduodenoscopy (EGD) Coverage Policy, Radiofrequency Therapy for Fecal Incontinence.

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    Clinical & Coding Specifications

    Clinical Context

    A 72-year-old patient admitted to an inpatient medical ward for acute decompensated heart failure requires prolonged daily evaluation by the attending hospitalist. After the initial inpatient evaluation and management (E/M) visit, the attending documents that an additional 30 minutes beyond the minimum required time were spent on the same calendar date performing complex care coordination, review of evolving labs and imaging, adjustment of multiple medication regimens, family communication, and discharge planning. The provider documents total face-to-face and non–face-to-face time tied to the inpatient E/M service and appends time-based reporting for the incremental intervals. The clinical workflow begins with the primary inpatient E/M visit (documenting history, exam, medical decision-making or total time) followed by separate documentation of each additional 15-minute increment to support use of the additional time code. Typical site of service is an inpatient hospital or observation setting; the service type is an inpatient/observation evaluation and management service reported in time increments beyond the base E/M encounter.

    Related CPT Codes

    CPT CodeDescriptionRelationship to This Procedure
    99221Initial hospital care, typically 30 minutes at bedside and on the hospital floorOften performed as the initial inpatient E/M visit before reporting additional time increments
    99222Initial hospital care, typically 50 minutesHigher-complexity initial inpatient visit; additional time may be reported beyond this visit
    99223Initial hospital care, typically 70 minutesMost complex initial inpatient visit; additional 15-minute increments may still apply
    99231Subsequent hospital care, typically 15 minutes per dayDaily follow-up visits; additional increments reported with 99418 for time beyond typical
    99232Subsequent hospital care, typically 25 minutes per dayMid-level subsequent visits where extra time may be separately reported
    99233Subsequent hospital care, typically 35 minutes per dayHigher complexity subsequent visit; additional prolonged time may still be required

    Related Modifiers

    9 rows

    ModifierDescriptionWhen to Use
    25CPT modifier 25 indicates that on the same day as another procedure or service, the same physician or other qualified health care professional provided a significant, separately identifiable…- When to apply: Use modifier 25 only on an E/M code to indicate the same provider delivered a significant, separately identifiable E/M service on the same day as another procedure or service — i.e.,…
    24Modifier 24 denotes an unrelated evaluation and management (E/M) service performed by the same physician or qualified healthcare professional during a postoperative global period. Per CPT guidance,…- Use modifier 24 when you report an evaluation and management (E/M) service performed by the same physician or same-specialty group during a procedure’s postoperative global period that is unrelated…
    57CPT® modifier -57 (“Decision for Surgery”) is appended to an Evaluation and Management (E/M) service when that encounter results in the initial decision to perform a major surgery (a procedure with a…- Use modifier 57 when an E/M service provided by the same provider (or same tax ID) on the day of or the day before a major surgical procedure (90‑day global period) results in the initial decision…
    22Modifier –22 (Increased Procedural Services) is used when a reported procedure is substantially more extensive than normally required. The CPT Manual and CMS state it may be appended only when the…- When to use: Append modifier -22 to a procedural CPT code when the service performed is substantially more extensive than the usual service described by that code — i.e., the procedure required…
    78CPT modifier -78 indicates an unplanned, related return to the operating or procedure room by the same provider during the global postoperative period. It is appended when treatment for a…- Use modifier -78 when an unplanned, related complication during the original procedure’s global postoperative period requires the patient to return to a formal operating or procedure room and the…
    95Modifier 95 indicates that a service was provided via synchronous, real‑time audio‑video telehealth rather than in‑person. Per CMS, AAPC and professional associations, append modifier 95 to claim…- Use modifier 95 to indicate a service was furnished via synchronous, real‑time audiovisual telehealth (a live audio‑video conference between patient and provider) rather than in‑person. - Pair…
    62Modifier 62 indicates that two surgeons function as co‑surgeons, each performing distinct parts of the same primary surgical procedure. It is appended to the primary procedure code (and any…- Use modifier -62 when two surgeons act as co‑surgeons (both primary surgeons) on a single definitive primary procedure, each performing distinct parts of the same surgical procedure (append -62 to…
    52Modifier ‑52 (Reduced Services) indicates that a service or procedure was partially reduced or omitted at the provider’s discretion, allowing reporting of the basic procedure number with a qualifier…- Use modifier -52 when a physician or qualified health professional electively reduces or omits part of a procedure or service (for example, performing fewer required views or omitting a portion of…
    53Modifier 53 (Discontinued Procedure) signals that a surgical or diagnostic service was begun by the physician but terminated because of extenuating circumstances that threatened the patient’s…- Use modifier -53 when a physician/qualified healthcare professional has started a surgical or diagnostic procedure (e.g., anesthesia administered, incision or scope insertion) and then discontinues…

    Related Provider Taxonomies

    8 rows

    Taxonomy Code
    207RH0000X
    207RM1200X
    207RA0000X
    2080P0006X
    2355A2700X
    2084N0008X
    261QC1800X
    207XP3100X

    Related Payer Policy Updates

    Specialty: Gastroenterology1 / 3

    10 rows

    PolicyPayerEffective Date
    Percutaneous Electrical Nerve Field Stimulation for Functional Abdominal Pain Disordersbcbsvermont2026-12-01
    Esophagogastroduodenoscopy (EGD) Coverage Policyevicore2026-11-05
    Radiofrequency Therapy for Fecal IncontinenceCigna2026-10-15
    Magnetic Sphincter Augmentation for the Treatment of Gastroesophageal Reflux Disease (GERD)univerahealthcare2026-10-15
    High-Resolution Anoscopy (HRA)Premera Bluecross2026-10-01
    Gastroesophageal and Gastrointestinal (GI) Services and ProceduresColorado Rocky Mountain Health Plans2026-10-01
    Serum Testing for Hepatic Fibrosis in the Evaluation and Monitoring of Chronic Liver DiseaseOscar Health2026-10-01
    Fecal Analysis in the Diagnosis of Intestinal Dysbiosis and Fecal Microbiota Transplant TestingOscar Health2026-10-01
    Pancreatic Enzyme Testing for Acute PancreatitisOscar Health2026-10-01
    Helicobacter pylori TestingOscar Health2026-10-01

    Related Codes

    CPT-99411-GROUP-PREVENTIVE-COUNSELING-30-MINUTE

    CPT 99411: Group Counseling for Health Promotion, ~30 Minutes

    CPT-99412-GROUP-HEALTH-EDUCATION-ONE-HOUR

    CPT 99412: Group Health Counseling, Approximately 60 Minutes

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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