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ICD-10-CM/PCS Examples: Structural Differences

May 06, 2015

The examples below show the structural differences between ICD-9-CM and ICD-10-CM/PCS.

ICD-9-CM Diagnoses Codes:

  • 3–5 digits
  • First digit is alpha (E or V) or numeric
  • Digits 2–5 are numeric; and Decimal is after third digit

Examples:

496 – Chronic airway obstruction, Not Elsewhere Classified (NEC)

511.9 – Unspecified pleural effusion

V02.61 – Hepatitis B carrier

 

ICD-10-CM Diagnoses Codes:

  • 3–7 digits
  • Digit 1 is alpha
  • Digit 2 is numeric
  • Digits 3–7 are alpha or numeric (alpha digits are not case sensitive)
  • Decimal is after third digit

Examples:

A78 – Q fever

A69.21 – Meningitis due to Lyme disease

S52.131a – Displaced fracture of neck of right radius, initial encounter for closed fracture.

 

ICD-9-CM Procedure Codes:

  • 3–4 digits
  • All digits are numeric
  • Decimal is after second digit

Examples:

43.5 – Partial gastrectomy with anastomosis to esophagus; and

44.42 – Suture of duodenal ulcer site.

 

ICD-10-PCS Procedure Codes:

  • 7 digits
  • Each digit is either alpha or numeric (alpha digits are not case sensitive and letters O and I are not used to avoid confusion with numbers 0 and 1
  • No decimal

Examples:

0FB03ZX – Excision of liver, percutaneous approach, diagnostic; and

0DQ10ZZ – Repair upper esophagus, open approach.


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