ICD-10 code for lateral sclerosis

The ICD-10-CM code for lateral sclerosis is G12.21 (Amyotrophic lateral sclerosis). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on G12.21.

Within G12.2 (motor neuron disease), G12.21 is specifically for Amyotrophic lateral sclerosis. Related codes cover unspecified (G12.20), progressive bulbar palsy (G12.22), primary lateral sclerosis (G12.23), familial motor neuron disease (G12.24), progressive spinal muscle atrophy (G12.25) and other motor neuron disease (G12.29).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 056 (Degenerative Nervous System Disorders with MCC, relative weight 2.2655) and DRG 057 (Degenerative Nervous System Disorders without MCC, relative weight 1.2838), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.