Home / Healthcare RCM Blog / Medical Coding (ICD-10, CPT, & Modifiers)
Topic
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.
103 guides
Eczema ICD-10 Codes: L20.9 vs L30.9 and When to Use Each
Which ICD-10 code fits eczema? Atopic dermatitis is L20.9, plain eczema is L30.9, and L20.8 cannot be reported alone. See the FY2027 code map and the Excludes notes.
Dog Bite ICD-10 Codes: W54.0XXA and Injury Codes
Which dog bite ICD-10 codes to report, why W54.0XXA is never enough on its own, and how injury severity, infection and rabies exposure change the claim.
DME Billing Modifiers: RR, NU, UE, KH, KI, KJ and KX Explained
A source-checked guide to the DME billing modifiers that decide rental or purchase, capped rental month, policy status, coverage status and side, with the rules for combining them.
DME Coding Guide: HCPCS Codes, Modifiers and ICD-10
How DME coding works on a claim: the HCPCS Level II code, the modifiers, the diagnosis support and the documentation behind them, with a hospital bed example and a pre-bill...
Understanding Diabetes ICD-10 Codes: A Comprehensive Guide for Healthcare Professionals
Discover the importance of Diabetes ICD-10 codes for accurate diagnosis, treatment, and improved patient care.
CPT Code for Shingles Vaccine: 90750 Billing Guide
Which CPT code do you bill for the shingles vaccine? A plain guide to 90750, the administration and diagnosis codes that go with it, the two-dose series, and why Medicare...
Understanding CPT Codes in Medical Billing: A Comprehensive Guide
Discover the essential role of CPT codes in medical billing and revenue cycle management for healthcare providers.
CPT Codes for Debridement: 11042-11047, 97597-97602 Guide
Which debridement code applies depends on the deepest tissue removed, how it was removed and how big the wound is. Here is how the four code families fit together.
Understanding CPT Codes and Modifiers for Pathology Medical Billing
Discover the importance of CPT codes and modifiers in pathology medical billing for accurate reimbursement.
CPT 99203: New Patient Visit Requirements and Medicare Rate
What CPT 99203 requires in 2026, how to choose it by MDM or time, what Medicare pays, and when modifier 25 applies.
Anxiety ICD-10 Codes: F41, F40 and F43 Guide (FY2027)
Which anxiety ICD-10 code fits each documented diagnosis in FY2027, including the F41.2 error, F41.8, F40.10 and the Excludes notes that matter on a claim.
ABA Therapy CPT Codes: 97151-97158 Billing Guide
A plain-language map of the ABA therapy CPT codes 97151-97158: what each reports, who bills it, how 0362T and 0373T fit, and what is changing in 2027.
Want this applied to your claims?
Send us your last 3 months of claim data for a free audit.