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Medical Coding (ICD-10, CPT, & Modifiers)
Plain-English guides to ICD-10, CPT and HCPCS coding, modifiers, and the payer rules that decide whether a claim pays. Written for practice managers, coders and billers.
102 guides
Wound Care CPT Codes: A Service-by-Service Guide
Wound care CPT codes group by service, not wound type. See which code family fits debridement, NPWT, compression, repair and E/M, and what bundles.
90837 CPT Code: The 53-Minute Rule, Notes and Denials
The 90837 CPT code covers individual psychotherapy of 53 minutes or more. See how it differs from 90834 and 90847, what the note needs and which payer limits cause denials.
90834 CPT Code: 45-Minute Psychotherapy Time Rules and Denials
The 90834 CPT code covers 38 to 52 minutes of individual psychotherapy. Here is how it differs from 90832 and 90837, what the note must show and why claims deny.
Lab Review ICD 10 Codes: Z01.89, R79 and Medical Necessity
Lab review ICD 10 has no single code. See when Z01.89, an abnormal finding code or a confirmed diagnosis fits, and what the order must show to support medical necessity.
L3000 HCPCS Code: Medicare Coverage, Modifiers and Billing
The L3000 HCPCS code is an HCPCS Level II foot insert code, not CPT. Here is when Medicare covers it, which modifiers go on the claim line, and what to...
CPT Code for Physical Therapy Evaluation and Treatment Guide
How to choose between 97161, 97162 and 97163, when 97164 applies, how timed treatment units work, and what the record needs to defend each claim.
CPT Code for ECT: 90870 Billing, Anesthesia and Documentation
What CPT 90870 covers, how anesthesia code 00104 is billed, and which payer, place-of-service and E/M checks to run before an ECT claim goes out.
CPT 96127 Documentation: What to Chart to Get Paid
What a chart note must show for CPT 96127, how units and modifier 25 work, where Medicare G0444 fits, and what to check when a claim is denied.
CBC ICD-10 Code: What Supports Medical Necessity
How to choose a CBC ICD-10 code that matches the note, what Medicare's Blood Counts rule says, and how to triage a denied CBC claim.
Behavioral Health Coding Cheat Sheet: CPT Codes and Modifiers
A sourced one-page reference for psychotherapy CPT codes, time ranges, add-on codes and telehealth place of service and modifiers, plus how to turn it into a desk sheet your team...
90846 CPT Code Time Range: The 26-Minute Rule Explained
How many minutes you need for 90846, who may attend, and which payer limits to check before you bill family psychotherapy without the patient.
90836 CPT Code: Psychotherapy Add-On With E/M, Time Rules
The 90836 CPT code pairs a 38 to 52 minute psychotherapy block with an E/M visit. Here are the time, pairing, same-day and documentation rules, and where payers add limits.
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