Cheat sheet

AAPC CIC Cheat Sheet

ICD-10-CM/PCS Coding

65-72%of exam

Payment Methodologies

9-12%of exam

MS-DRG BasicsAPR-DRG vs MS-DRGCC and MCCAPC OutpatientDRG Factors

Docs, Compliance, Regulatory

15-21%of exam

Health RecordOIG ComplianceCMS RulesMedical NecessityQuery Process

Quick Facts

Exam
AAPC CIC
Credential
Inpatient Coder
Time
5h 40m
Pass
70%
Format
Open book
Items
60 MC + 10 cases
Cases
~65% of score
Fee
$399-$499

PCS 7 Characters

Section System Root Part Approach Device Qual

S: procedure typeBS: anatomyRO: objectiveBP: siteAp: accessD: implantQ: detail

Excision vs Resection

Excision

  • Portion removed
  • Some tissue left
  • Partial removal

Resection

  • All removed
  • Entire organ
  • Complete removal

Part vs all

PCS Code Picker

  1. Cut portion outExcision(Not all)
  2. Remove entire organResection(All out)
  3. Fix without cuttingRepair(No excision)
  4. Substitute body partReplacement(Prosthetic)
  5. Reroute passageBypass(Alter path)
  6. Place implantInsertion(Device char)
  7. Take out deviceRemoval(No procedure)
  8. Join bonesFusion(Spine common)

ICD-10-CM Conventions

NEC
Not elsewhere classified
NOS
Not otherwise specified
Excludes1
Never code together
Excludes2
Not included here
Code first
Underlying cause first
Use additional
Add second code
7th char
Encounter type A/D/S

POA Letters

Y=Yes N=No U=Unknown W=Undetermined E=Exempt

Y: on admissionN: acquiredU: unclear docsW: clinical unknown

Principal vs Secondary DX

Principal

  • Reason for admission
  • Sequences first
  • Drives DRG

Secondary

  • Coexisting conditions
  • Additional codes
  • Affects CC/MCC

Why admitted vs also

Principal DX Picker

  1. Symptom then definitiveDefinitive DX(Drop symptom)
  2. Admission for chemoZ51.11(Principal)
  3. Two equal reasonsEither first(Clinical call)
  4. Complication of careComplication code(If reason)
  5. Observation stayCondition studied(Not symptom)
  6. Planned procedureCondition treated(Not procedure)
  7. Sepsis on admissionSepsis code(If confirmed)
  8. Transfer inReason at sending(Same principal)

Principal Diagnosis

Principal DX
Reason for admission
UHDDS
Uniform discharge standard
After study
Post workup diagnosis
Symptom rule
Definitive replaces symptom
Z51 principal
Chemo/radiation admission
Equal DX
Either may sequence first
Admit rule
Condition occasioning stay

POA Y vs N

POA Y

  • On admission
  • Full payment
  • Expected condition

POA N

  • Hospital acquired
  • HAC risk
  • May reduce pay

Admission vs acquired

ICD-10-PCS Structure

Section
Char 1 procedure type
Body system
Char 2 anatomy group
Root operation
Char 3 objective
Body part
Char 4 site
Approach
Char 5 access route
Device
Char 6 implant
Qualifier
Char 7 detail
Valid code
All 7 chars required

ICD-10-CM vs PCS

ICD-10-CM

  • Diagnoses
  • Why patient here
  • Alphanumeric DX

ICD-10-PCS

  • Procedures
  • What was done
  • 7-char code

Diagnosis vs procedure

Root Operations

Excision
Cut out portion
Resection
Cut out all
Repair
Restore function
Replacement
Put in substitute
Bypass
Alter route
Insertion
Put in device
Removal
Take out device
Fusion
Join body parts

POA Indicators

POA Y
Present on admission
POA N
Not on admission
POA U
Documentation unclear
POA W
Clinically undetermined
POA E
Exempt from reporting
HAC rule
N may reduce payment

DRG Inputs

Principal DX + PCS + CC/MCC + POA

Principal: grouper basePCS: procedure tierCC/MCC: severityPOA: HAC flag

MS-DRG vs APR-DRG

MS-DRG

  • Medicare PPS
  • CC/MCC tiers
  • Federal inpatient

APR-DRG

  • All-payer model
  • SOI and ROM
  • State Medicaid

Medicare vs all-payer

MS-DRG Basics

MS-DRG
Medicare inpatient grouper
Principal DX
Primary grouper input
CC
Complication/comorbidity
MCC
Major CC
Relative weight
Payment multiplier
Transfer rule
Per-diem if early out
Grouper
Assigns final DRG

CC vs MCC

CC

  • Complication/comorbidity
  • Moderate impact
  • Lower weight bump

MCC

  • Major CC
  • High impact
  • Larger DRG shift

Moderate vs major

APR-DRG and APC

APR-DRG
All-payer severity DRG
SOI
Severity of illness
ROM
Risk of mortality
APC
Outpatient payment group
OPPS
Outpatient PPS
Status indicator
APC pay rule

Health Record

Discharge summary
Final stay narrative
Operative report
Procedure documentation
Progress notes
Daily clinical updates
Query
Clarify documentation
CDI
Clinical documentation improvement
Attending
Responsible physician
EHR
Electronic health record

Compliance and CMS

OIG
Fraud oversight office
Stark Law
Physician referral limits
Anti-Kickback
Prohibits inducements
Medical necessity
Care must be warranted
LCD/NCD
Coverage determinations
UPIC
Medicare audit contractor
False Claims
Billing fraud statute

Common Traps

Excision vs resection

Excision removes part Resection removes all

Principal vs admitting

Principal after study Not first documented

Symptom vs definitive

Drop symptom code Code confirmed DX

CC vs MCC

CC is moderate MCC is major

POA Y vs N

Y on admission N hospital acquired

MS-DRG vs APR

MS is Medicare APR adds SOI/ROM

Last Minute

  1. 1.Cases = ~65% of score
  2. 2.Open book: tab ICD manuals
  3. 3.Principal DX = reason for admission
  4. 4.PCS: 7 chars all required
  5. 5.Excision = part; Resection = all
  6. 6.POA Y on admission; N acquired
  7. 7.CC moderate; MCC major severity
  8. 8.Z51.11 principal for chemo admit
  9. 9.Query unclear documentation first
  10. 10.MS-DRG uses CC/MCC tiers
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