Coding Guidelines — Quick Reference Cheatsheet
Essential Formulas & Rules
Core Topics
ICD-10-CM Guideline Sections (A-C):
Key formula/rule: See fundamentals section for complete derivation
When to apply: When the problem mentions keywords related to icd-10-cm guideline sections (a-c)
Principal Diagnosis Selection:
Key formula/rule: See fundamentals section for complete derivation
When to apply: When the problem mentions keywords related to principal diagnosis selection
Additional Diagnoses:
Key formula/rule: See fundamentals section for complete derivation
When to apply: When the problem mentions keywords related to additional diagnoses
Outpatient vs Inpatient Rules:
Key formula/rule: See fundamentals section for complete derivation
When to apply: When the problem mentions keywords related to outpatient vs inpatient rules
Signs & Symptoms Coding:
Key formula/rule: See fundamentals section for complete derivation
When to apply: When the problem mentions keywords related to signs & symptoms coding
Combination Codes:
Key formula/rule: See fundamentals section for complete derivation
When to apply: When the problem mentions keywords related to combination codes
Problem-Solving Templates
Template 1: Identify → Apply → Verify
Template 2: For MCQs
Most Common Question Types
| Type | What to Do | Time Budget |
|---|
|---|---|---|
| Direct formula | Apply formula directly | 30-60 sec |
|---|---|---|
| Multi-step | Break into steps, apply each | 1-2 min |
| Concept-based | Recall definition + example | 45 sec |
| Data interpretation | Extract data, compute | 2-3 min |
Revision Strategy
1 month before exam:
1 week before:
1 day before:
Labs Section
The Labs section for Coding Guidelines has: