M53.9Dorsopathy, unspecified

M53.9 is the ICD-10-CM diagnosis code for dorsopathy, unspecified. It belongs to category M53 (other and unspecified dorsopathies, not elsewhere classified), block M50-M54 (other dorsopathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within M53, choose M53.9 (Dorsopathy, unspecified) only when documentation doesn't support a more specific option: Cervicocranial syndrome (M53.0), Cervicobrachial syndrome (M53.1), spinal instabilities (M53.2), sacrococcygeal disorders, not elsewhere classified (M53.3) and other specified dorsopathies (M53.8).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 551 (Medical Back Problems with MCC, relative weight 1.6358) and DRG 552 (Medical Back Problems without MCC, relative weight 0.9584), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 724.9 (other unspecified back disorders).