CPT Code Overview

CPT code 99310 is used for subsequent nursing facility care, per day, for the evaluation and management of a patient. This code requires at least two of three key components: a detailed interval history, a detailed examination, and medical decision making of high complexity. The service type is Geriatrics, and the typical site of service is a Nursing Facility (Place of Service 32). This code is essential for documenting and billing complex follow-up care provided to patients residing in nursing facilities.

Clinical Context

A typical patient scenario for CPT code 99310 involves an elderly individual residing in a nursing facility (Place of Service 32). The patient may have multiple chronic conditions such as essential hypertension (I10), type 2 diabetes mellitus without complications (E11.9), and mobility issues like difficulty in walking (R26.2). The patient may also have a history of falling (Z91.81) and be bed-confined (Z74.01). During a subsequent nursing facility care visit, the provider conducts a detailed interval history and examination, and engages in medical decision making of high complexity. This visit is part of ongoing management, often by a geriatric medicine, family medicine, or internal medicine physician, to address acute changes, review medications, and coordinate care for complex medical needs.

Coding Specifications

• Modifiers:

  • Modifier 25: Significant, Separately Identifiable Evaluation and Management Service by the Same Physician on the Same Day of the Procedure or Other Service. Used when an E/M service is distinct from another procedure performed on the same day.
  • Modifier 59: Distinct Procedural Service. Used to indicate that a procedure or service is separate and not normally reported together with other services.

• Provider Taxonomies:

  Taxonomy Code	Specialty Name
  207RG0300X	Geriatric Medicine Physician
  207Q00000X	Family Medicine Physician
  207R00000X	Internal Medicine Physician

These taxonomies represent providers who commonly deliver subsequent nursing facility care services.

Related Diagnoses

• Z74.01 - Bed confinement status

  • Indicates the patient is confined to bed, relevant for nursing facility care due to increased risk of complications and need for complex management.

• Z91.81 - History of falling

  • Reflects a risk factor for injury and guides fall prevention strategies during nursing facility care.

• R26.2 - Difficulty in walking, not elsewhere classified

  • Highlights mobility issues requiring detailed assessment and intervention in the nursing facility.

• I10 - Essential (primary) hypertension

  • Common chronic condition managed during subsequent nursing facility visits.

• E11.9 - Type 2 diabetes mellitus without complications

  • Chronic disease requiring ongoing monitoring and management in the nursing facility setting.

Related CPT Codes

• 99307: Subsequent nursing facility care, per day, requiring a problem focused interval history, examination, and straightforward or low complexity medical decision making. Used for less complex follow-up visits.
• 99308: Subsequent nursing facility care, per day, requiring an expanded problem focused interval history, examination, and moderate complexity medical decision making. Used for moderately complex follow-up visits.
• 99309: Subsequent nursing facility care, per day, requiring a detailed interval history, examination, and moderate complexity medical decision making. Used for detailed follow-up visits with moderate complexity.
• 99318: Evaluation and management involving an annual nursing facility assessment, requiring a comprehensive interval history, examination, and moderate to high complexity medical decision making. Used for annual comprehensive assessments.

CPT codes 99307, 99308, and 99309 are commonly used as alternatives to 99310 depending on the complexity of the patient's condition and the level of service provided. Code 99318 is typically used for annual assessments and may be used in conjunction with subsequent care codes for comprehensive patient management.

Nationally, the mean rate for CPT code 99310 under Medicare is $167.88, closely aligned with the BUCA (average commercial) mean rate of $168.02. Commercial payers such as Cigna and UnitedHealth Group show higher mean rates, with Cigna at $209.40 and UnitedHealth Group at $184.61, while Aetna is notably lower at $141.89.

Rate dispersion, measured by the difference between the 75th and 25th percentiles, varies significantly across payers. Medicare exhibits the tightest range at $12.00, indicating relatively consistent reimbursement. In contrast, Cigna has the widest spread at $113.00, reflecting greater variability in commercial rates. Blue Cross Blue Shield and UnitedHealth Group also show substantial dispersion, with ranges of $79.50 and $96.00, respectively.

The table and chart below present a detailed breakdown of national benchmarks for CPT code 99310 by payer, including mean rates and percentile values.