ICD-10/G73.1

G73.1 ICD 2026 Code: Lambert-Eaton syndrome in neoplastic disease

G73.1 is the authoritative medical code for Lambert-Eaton syndrome in neoplastic disease. This classification is used in medical billing and clinical recording to specify the clinical criteria for lambert-eaton syndrome in neoplastic disease (ICD-10-CM G73.1), ensuring healthcare documentation aligns with 2026 federal coding standards.

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

Official Registry Overview & Definition

Lambert-Eaton syndrome in neoplastic disease is a billable ICD-10-CM diagnosis code G73.1. Excludes1 (not coded here): Lambert-Eaton syndrome not associated with neoplasm (G70.80-G70.81). Code first: underlying neoplasm C00-D49.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for G73.1 in the official ICD-10-CM tabular list.

Excludes1 — Not Coded Here

Conditions that can never be reported with this code; the two are mutually exclusive.

  • Lambert-Eaton syndrome not associated with neoplasm (G70.80-G70.81)

Code First

Underlying conditions that must be sequenced before this code.

  • underlying neoplasm C00-D49

Frequently Asked Questions (FAQ) & Clinical Guidance

What can't be coded together with G73.1?

Per Excludes1 instructions, G73.1 must not be reported with: Lambert-Eaton syndrome not associated with neoplasm (G70.80-G70.81).

Does G73.1 need to be sequenced after another code?

Yes. Code first: underlying neoplasm (C00-D49).

Codes in This Family (3)

Official ICD-10-CM classifications in the same code family as G73.1, with their registry titles.

  • G73 — Disorders of myoneural junction and muscle in diseases classified elsewhere
  • G73.3 — Myasthenic syndromes in other diseases classified elsewhere
  • G73.7 — Myopathy in diseases classified elsewhere

Indexed Clinical Terms (1)

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

  • Syndrome, Lambert-Eaton, in, neoplastic disease

Related Codes & Numerical Sequence (Crawl Map)

Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:

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