ICD-10-CM 2027
ICD-10 code for Psoitis
From the official ICD-10-CM alphabetic index entry “Psoitis”. Page updated September 29, 2026.
About coding Psoitis
The ICD-10-CM code for Psoitis is M60.88 (Other myositis, other site).
Within M60.8, choose M60.88 (other site) only when documentation doesn't support a more specific option: unspecified site (M60.80), shoulder (M60.81), upper arm (M60.82), forearm (M60.83), hand (M60.84), thigh (M60.85), lower leg (M60.86), ankle and foot (M60.87) and 1 more.
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 555 (Signs and Symptoms of Musculoskeletal System and Connective Tissue with MCC, relative weight 1.2913) and DRG 556 (Signs and Symptoms of Musculoskeletal System and Connective Tissue without MCC, relative weight 0.8211), 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.
Common questions about Psoitis ICD-10 codes
What is the ICD-10 code for Psoitis?
- M60.88 — Other myositis, other site.
Is M60.88 billable?
- Yes. M60.88 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M60.88 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M60.88 as a principal diagnosis.
Is M60.88 a CC or MCC?
- No. M60.88 is neither a CC nor an MCC under MS-DRG v44.0.