ICD-10-CM vs ICD-10-PCS: A Coder's Guide
When to use ICD-10-CM vs ICD-10-PCS, how their formats differ, who reports each, and why outpatient claims never carry PCS codes. A coder's decision guide.
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Guides, tutorials, and tips on DICOM Tools, HL7 Tools, Clinical Coding and more. 68 practical articles from our free, privacy-first online tools.
DICOM Tag Viewer vs PACS: Resolving Tag Mismatches
Why a DICOM tag value differs in your viewer versus PACS, and how to resolve mismatches caused by tag morphing, coercion, character sets, and caching.
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DICOM De-Identification for Clinical Trial Submission
A sponsor checklist for DICOM de-identification in clinical trial submissions — DICOM PS3.15 profiles, date shifting, UID remapping, ALCOA+ and core lab needs.
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ICD-10-CM Coding Conventions: 7th Character, Placeholder X, NEC/NOS
Master the ICD-10-CM coding conventions: the icd 10 7th character, the placeholder X, code first and use additional code sequencing, and NEC vs NOS.
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MONOCHROME1 vs MONOCHROME2: Inverted DICOM Images
Why a DICOM image shows up as a black-and-white negative — how MONOCHROME1 vs MONOCHROME2 photometric interpretation and inverted LUTs control the display.
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Excludes1 vs Excludes2 in ICD-10-CM: Notes Explained
Excludes1 vs Excludes2 in ICD-10-CM explained: what the excludes notes mean, when you can code both conditions, and worked examples with real ICD-10 codes.
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Converting Multi-Frame DICOM to Single Frames
Extract single frames from multi-frame DICOM cine loops and convert to JPEG or PNG: frame indexing, per-frame windowing, and preserving temporal order safely.
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Billable vs Non-Billable ICD-10-CM Codes (Specificity Rules)
How to tell billable ICD-10 codes from non-billable header codes: full specificity, the terminal-code rule, 7th-character requirements, and why claims reject.
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Flattening Repeating HL7 Fields to JSON
Convert HL7 repeating fields and nested components to JSON arrays correctly, without collapsing repetitions, dropping subcomponents, or losing escapes.
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CT Window Presets: Brain, Lung, Bone & Soft Tissue Settings
A practical reference of radiology window level presets: brain, subdural, stroke, bone, lung, and soft tissue CT window settings in WW/WL (HU).
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Understanding FHIR Validator Cardinality and Slicing Errors
Decode FHIR validator cardinality and slicing errors — what minimum cardinality not met means, why slices fail, and how to fix each one fast.
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How ICD-10-CM Chapters Are Organized (All 21 Chapters)
Learn how ICD-10-CM chapters are organized: all 21 chapters by body system, their code-letter ranges, coding guidelines, and how coders navigate them.
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