Specific code 2015 ICD-9-CM Diagnosis Code 358.1
Myasthenic syndromes in diseases classified elsewhere
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015
  • Manifestation Code

  • ICD-9-CM 358.1 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 358.1 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 358.1 converts directly to:
  • 2015/16 ICD-10-CM G73.3 Myasthenic syndromes in other diseases classified elsewhere
Approximate Synonyms
  • Eaton Lambert syndrome
  • Eaton-Lambert syndrome (disorder)
  • Myasthenic syndrome due to another disorder
  • Myasthenic syndrome in other disease
Code First
ICD-9-CM Coding Information
  • 358.1 describes the manifestation of an underlying disease, not the disease itself.
ICD-9-CM Volume 2 Index entries containing back-references to 358.1:
  • Myasthenia 358.00
    • syndrome
      • in
        • botulism 005.1 [358.1]
        • diabetes mellitus 250.6 [358.1]
          • due to secondary diabetes 249.6 [358.1]
        • hypothyroidism (see also Hypothyroidism) 244.9 [358.1]
        • malignant neoplasm NEC 199.1 [358.1]
        • pernicious anemia 281.0 [358.1]
        • thyrotoxicosis (see also Thyrotoxicosis) 242.9 [358.1]
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 358.1 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.