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R74.02 ICD-10-CM Code: Elevation of levels of lactic acid dehydrogenase [LDH]

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.

  • MS-DRG 947 — SIGNS AND SYMPTOMS WITH MCC (MDC 23)
  • MS-DRG 948 — SIGNS AND SYMPTOMS WITHOUT MCC (MDC 23)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Official Registry Overview & Definition

Elevation of levels of lactic acid dehydrogenase [LDH] is a billable ICD-10-CM diagnosis code (R74.02).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for R74.02 in the official ICD-10-CM tabular list.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Indexed Clinical Terms (3)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Elevated, elevation, lactic acid dehydrogenaselevel (LDH)
  • Elevated, elevation, liver function, test, lactate dehydrogenase
  • Findings, abnormal, inconclusive, without diagnosis, lactic acid dehydrogenase (LDH)

Frequently Compared Codes

The official Excludes notes on R74.02 name these codes. Each comparison page covers when the two can — or must not — be reported together.

Change history

  • FY2021 — 2020-10-01
    Added to the code set
    Elevation of levels of lactic acid dehydrogenase [LDH]
    FY2021 changes

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Relationships & Classification

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 2 MS-DRGs: DRG 947 (MDC 23), DRG 948 (MDC 23).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Clinical classification (AHRQ CCSR):SYM017 — Abnormal findings without diagnosis (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Contextual Map

Every relationship of R74.02 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

  • R00-R99 — Chapter 18: Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) (R00-R99) [Hierarchy]
  • R70-R79 — Abnormal findings on examination of blood, without diagnosis [Hierarchy]

Clinical classification (CCSR)

  • SYM017 — Abnormal findings without diagnosis [CCSR]

Potential MS-DRG

  • DRG 947 — SIGNS AND SYMPTOMS WITH MCC [MS-DRG]: “SIGNS AND SYMPTOMS WITH MCC (MDC 23)”
  • DRG 948 — SIGNS AND SYMPTOMS WITHOUT MCC [MS-DRG]: “SIGNS AND SYMPTOMS WITHOUT MCC (MDC 23)”

MDC crossing · procedures (1235)

  • MDC 23 — Factors Influencing Health Status and Other Contacts with Health Services [MDC crossing]: “Factors Influencing Health Status and Other Contacts with Health Services — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • F003GKZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Audiovisual Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Audiovisual Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GMZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Augmentative / Alternative Communication Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Augmentative / Alternative Communication Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GPZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Computer [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Computer — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GYZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Other Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Other Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GZZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • and 1230 more

Index entries

  • Elevated, elevation, lactic acid dehydrogenaselevel (LDH)[Index term]
  • Elevated, elevation, liver function, test, lactate dehydrogenase[Index term]
  • Findings, abnormal, inconclusive, without diagnosis, lactic acid dehydrogenase (LDH)[Index term]

Nearest codes

  • R74 — Abnormal serum enzyme levels [Sibling]
  • R74.0 — Nonspecific elevation of levels of transaminase and lactic acid dehydrogenase [LDH] [Sibling]
  • R74.01 — Elevation of levels of liver transaminase levels [Sibling]
  • R74.8 — Abnormal levels of other serum enzymes [Sibling]
  • R74.9 — Abnormal serum enzyme level, unspecified [Sibling]

Change history

  • FY2021 — Added to the code set [Change history]

Nearest Codes in This Family

Official ICD-10-CM classifications closest to R74.02 in its code family, with their registry titles.

  • R74 — Abnormal serum enzyme levels
  • R74.0 — Nonspecific elevation of levels of transaminase and lactic acid dehydrogenase [LDH]
  • R74.01 — Elevation of levels of liver transaminase levels
  • R74.8 — Abnormal levels of other serum enzymes
  • R74.9 — Abnormal serum enzyme level, unspecified

View all codes in the R74 family