Medical Codes

CPT code 97530 bills therapeutic activities in 15 minute units under the 8 minute rule. Learn the modifiers, documentation, and 2026 reimbursement rules.

CPT code 99285 is the Level 5 emergency department visit for high complexity MDM. Learn the requirements, documentation, and 2026 reimbursement rules.

CPT code 99284 is the Level 4 emergency department visit for moderate complexity MDM. Learn the requirements, documentation, and 2026 reimbursement rules.

CPT code 99212 covers a 10 to 19 minute established patient visit. Learn the time, MDM, documentation, and 2026 reimbursement rules to bill it correctly.

A plain-English coder’s guide to the B00-B09 ICD-10 codes for viral skin and mucous membrane infections, from herpes and chickenpox to shingles, measles, warts, and hand, foot and mouth disease.

A practical coder’s guide to the B20 HIV ICD-10 code: when to assign it, how it differs from Z21 and R75, correct sequencing, the FY 2026 guideline updates, and HIV coding in pregnancy.

CPT code 99203 covers a new patient office visit with low-level MDM and 30 to 44 minutes of time. See the 2026 Medicare fee, MDM rules, modifiers, and denial fixes.

CPT code 93306 reports a complete transthoracic echocardiogram with spectral and color Doppler. See the required components, 2026 fees, modifiers, and denial fixes.

CPT code 72148 reports a lumbar spine MRI without contrast. See the components, 2026 fees, 26/TC modifiers, prior-auth rules, ICD-10 indications, and denial fixes.

Every disease, symptom, and medical condition has a unique code in the ICD-10-CM system, which stands for International Classification of Diseases, 10th Revision, Clinical Modification. Hospitals and clinics use