ICD-10-CM/PCS Coding
65-72%of exam
Payment Methodologies
9-12%of exam
Docs, Compliance, Regulatory
15-21%of exam
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
- Cut portion out→Excision(Not all)
- Remove entire organ→Resection(All out)
- Fix without cutting→Repair(No excision)
- Substitute body part→Replacement(Prosthetic)
- Reroute passage→Bypass(Alter path)
- Place implant→Insertion(Device char)
- Take out device→Removal(No procedure)
- Join bones→Fusion(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
- Symptom then definitive→Definitive DX(Drop symptom)
- Admission for chemo→Z51.11(Principal)
- Two equal reasons→Either first(Clinical call)
- Complication of care→Complication code(If reason)
- Observation stay→Condition studied(Not symptom)
- Planned procedure→Condition treated(Not procedure)
- Sepsis on admission→Sepsis code(If confirmed)
- Transfer in→Reason 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.Cases = ~65% of score
- 2.Open book: tab ICD manuals
- 3.Principal DX = reason for admission
- 4.PCS: 7 chars all required
- 5.Excision = part; Resection = all
- 6.POA Y on admission; N acquired
- 7.CC moderate; MCC major severity
- 8.Z51.11 principal for chemo admit
- 9.Query unclear documentation first
- 10.MS-DRG uses CC/MCC tiers
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