General Practice CPT Code Framework
General practice billing covers the broadest range of CPT codes in medicine. A general practitioner sees patients across all age groups, manages acute and chronic conditions, performs minor office procedures, and provides preventive care. The CPT code structure for general practice is anchored by evaluation and management (E/M) codes for office visits, supplemented by preventive medicine codes, chronic care management codes, and minor procedure codes. Mastering E/M level selection under the 2021 revised guidelines is the single most important billing skill for a general practice because office visits generate 70% to 80% of total practice revenue.
The 2021 E/M coding changes eliminated the history and physical exam requirements for code level selection. Under the current guidelines, the E/M level is determined by either medical decision making (MDM) complexity or total time spent on the encounter (including non-face-to-face time on the same day). This change simplified documentation but requires general practitioners to understand how MDM is scored across three elements: number and complexity of problems addressed, amount and complexity of data reviewed, and risk of complications or morbidity.
Office Visit E/M Codes (99202-99215)
New patient office visits use codes 99202 through 99205. Code 99202 (straightforward MDM, approximately $75 to $95) covers single, self-limited problems like acute pharyngitis or simple laceration evaluation. Code 99203 (low MDM, approximately $110 to $140) covers new patients with 2 to 3 minor problems or one chronic condition. Code 99204 (moderate MDM, approximately $170 to $210) applies when the assessment involves multiple chronic conditions or a new problem requiring additional workup. Code 99205 (high MDM, approximately $225 to $275) is reserved for new patients with severe or complex conditions requiring urgent decision-making.
Established patient visits use codes 99211 through 99215. Code 99211 (approximately $25 to $35) is the nurse visit code, used when the physician does not see the patient. Code 99212 (straightforward MDM, approximately $50 to $65) covers simple follow-up visits. Code 99213 (low MDM, approximately $80 to $100) is the most commonly billed code in general practice, covering patients with 2 to 3 stable chronic conditions or one acute uncomplicated illness. Code 99214 (moderate MDM, approximately $120 to $150) applies when multiple chronic conditions require adjustment or a new problem needs workup. Code 99215 (high MDM, approximately $175 to $215) covers complex patients with exacerbations or new severe diagnoses.
Preventive Visit Codes (99381-99397)
Preventive medicine codes are age-stratified. New patient preventive visits: 99381 (infant, under 1 year), 99382 (1-4 years), 99383 (5-11 years), 99384 (12-17 years), 99385 (18-39 years), 99386 (40-64 years), 99387 (65+ years). Established patient preventive visits: 99391 through 99397 following the same age brackets. Reimbursement ranges from $100 to $200 depending on the age group and payer. For Medicare patients, the Annual Wellness Visit (G0438 for initial, G0439 for subsequent) replaces the standard preventive codes and reimburses approximately $170 to $180. A preventive visit that also addresses a new or chronic problem can be billed with a separate E/M code using modifier 25, provided the E/M documentation supports a distinct service.
Minor Procedure Codes
General practitioners frequently perform minor office procedures. Incision and drainage of abscess (10060 for simple, approximately $150 to $200; 10061 for complicated, approximately $250 to $350) is among the most common. Skin biopsy codes changed in 2019: 11102 (tangential biopsy, first lesion, approximately $100 to $130) and 11103 (each additional lesion, approximately $60 to $80) replace the old 11100 series. Shave removal of skin lesion (11300-11313, approximately $80 to $150 depending on size and location) and destruction of benign lesions (17110 for up to 14 lesions, approximately $100 to $130) are common office procedures. Always bill the E/M visit with modifier 25 when a separately identifiable evaluation leads to the decision to perform the procedure.
Chronic Care Management (99490)
Chronic care management (CCM) code 99490 reimburses approximately $42 to $50 per month for 20 minutes of clinical staff time managing patients with two or more chronic conditions. Code 99491 (30 minutes of physician/qualified healthcare professional time, approximately $85 to $100 per month) reimburses at a higher rate for physician-directed CCM. The CCM revenue opportunity for general practice is substantial: a practice with 200 eligible CCM patients billing 99490 monthly generates $100,000 to $120,000 in annual CCM revenue. Eligible patients must have two or more chronic conditions expected to last at least 12 months, and the practice must obtain written patient consent before billing.