DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

R74 Abnormal serum enzyme levels

  • Header · not billable

R74 is not billable. The category heads 4 billable codes in FY2027, grouped under 3 subdivisions.

Index → code

  • Transaminasemia → R74.01
  • Elevated, elevationSGOT → R74.01
  • Elevated, elevationSGPT → R74.01

Where it sits

  1. Chapter 18 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)
  2. R70-R79 Abnormal findings on examination of blood, without diagnosis (R70-R79)
  3. R74 Abnormal serum enzyme levels
Billable codes
4
Subdivisions
3
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
24

Codes in R74

  1. R74.0
    Nonspecific elevation of levels of transaminase and lactic acid dehydrogenase [LDH]
    Header
  2. R74.01
    Elevation of levels of liver transaminase levels
    Billable
    Inclusion terms 2

    Inclusion terms

    • Elevation of levels of alanine transaminase (ALT)
    • Elevation of levels of aspartate transaminase (AST)
  3. R74.02
    Elevation of levels of lactic acid dehydrogenase [LDH]
    Billable
  4. R74.8
    Abnormal levels of other serum enzymes
    Billable
    Inclusion terms 4

    Inclusion terms

    • Abnormal level of acid phosphatase
    • Abnormal level of alkaline phosphatase
    • Abnormal level of amylase
    • Abnormal level of lipase [triacylglycerol lipase]
  5. R74.9
    Abnormal serum enzyme level, unspecified
    Billable

Sources of each column.

Instructions

Notes that also apply

Block R70-R79 instructions (Excludes2 7): printed on the block page.

Chapter 18 instructions (Notes 9, Excludes2 4): printed on the chapter 18 page.

Index entries

  • Transaminasemia → R74.01
  • Elevated, elevationalanine transaminase (ALT) → R74.01
  • Elevated, elevationALT (alanine transaminase) → R74.01
  • Elevated, elevationaspartate transaminase (AST) → R74.01
  • Elevated, elevationAST (aspartate transaminase) → R74.01
  • Elevated, elevationSGOT → R74.01
  • Elevated, elevationSGPT → R74.01
  • Elevated, elevationtransaminase level → R74.01
  • Findings, abnormal, inconclusive, without diagnosisSGOT → R74.01
  • Findings, abnormal, inconclusive, without diagnosisSGPT → R74.01
  • Findings, abnormal, inconclusive, without diagnosistransaminase (level) → R74.01
  • Elevated, elevationlactic acid dehydrogenase (LDH) level → R74.02
  • Findings, abnormal, inconclusive, without diagnosislactic acid dehydrogenase (LDH) → R74.02
  • Abnormal, abnormality, abnormalitiesserum level (of)acid phosphatase → R74.8
  • Abnormal, abnormality, abnormalitiesserum level (of)alkaline phosphatase → R74.8
  • Abnormal, abnormality, abnormalitiesserum level (of)amylase → R74.8
  • Abnormal, abnormality, abnormalitiesserum level (of)lipase → R74.8
  • Abnormal, abnormality, abnormalitiesserum level (of)triacylglycerol lipase → R74.8
  • Abnormal, abnormality, abnormalitiesserum level (of)enzymes → R74.9
  • Elevated, elevationliver functiontestaminotransferase → R74.01
  • Elevated, elevationliver functiontestlactate dehydrogenase → R74.02
  • Abnormal, abnormality, abnormalitiesserum level (of)enzymesspecified NEC → R74.8
  • Elevated, elevationliver functiontestalkaline phosphatase → R74.8
  • Elevated, elevationliver functiontesthepatic enzyme → R74.8

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