ICD-10-CM 2027
ICD-10 code for infective myositis
Infective myositis, unspecified site
From the official ICD-10-CM alphabetic index entry “Myositis › infective”. Page updated September 29, 2026.
About coding infective myositis
The ICD-10-CM code for infective myositis is M60.009 (Infective myositis, unspecified site). The official index lists 20 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M60.009.
Within M60.00 (infective myositis, unspecified site), M60.009 is specifically for infective myositis, unspecified site. Related codes cover right arm (M60.000), left arm (M60.001), arm (M60.002), right leg (M60.003), left leg (M60.004) and leg (M60.005).
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 557 (Tendonitis, Myositis and Bursitis with MCC, relative weight 1.489) and DRG 558 (Tendonitis, Myositis and Bursitis without MCC, relative weight 0.8875), 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.
More specific infective myositis codes (official index)
- arm M60.002 — Infective myositis, unspecified arm
- left M60.001 — Infective myositis, unspecified left arm
- right M60.000 — Infective myositis, unspecified right arm
- leg M60.005 — Infective myositis, unspecified leg
- left M60.004 — Infective myositis, unspecified left leg
- right M60.003 — Infective myositis, unspecified right leg
- lower limb M60.005 — Infective myositis, unspecified leg
- ankle M60.07 — Infective myositis, ankle, foot and toes
- foot M60.07 — Infective myositis, ankle, foot and toes
- lower leg M60.06 — Infective myositis, lower leg
- thigh M60.05 — Infective myositis, thigh
- toe M60.07 — Infective myositis, ankle, foot and toes
- multiple sites M60.09 — Infective myositis, multiple sites
- specified site NEC M60.08 — Infective myositis, other site
- upper limb M60.002 — Infective myositis, unspecified arm
- finger M60.04 — Infective myositis, hand and fingers
- forearm M60.03 — Infective myositis, forearm
- hand M60.04 — Infective myositis, hand and fingers
- shoulder region M60.01 — Infective myositis, shoulder
- upper arm M60.02 — Infective myositis, upper arm
Common questions about infective myositis ICD-10 codes
What is the ICD-10 code for infective myositis?
- M60.009 — Infective myositis, unspecified site. More specific codes apply when the documentation supports them: M60.002, M60.001, M60.000, M60.005 and others below.
What is the ICD-10 code for arm infective myositis?
- M60.002 — Infective myositis, unspecified arm.
What is the ICD-10 code for leg infective myositis?
- M60.005 — Infective myositis, unspecified leg.
What is the ICD-10 code for lower limb infective myositis?
- M60.005 — Infective myositis, unspecified leg.
What is the ICD-10 code for multiple sites infective myositis?
- M60.09 — Infective myositis, multiple sites.
What is the ICD-10 code for upper limb infective myositis?
- M60.002 — Infective myositis, unspecified arm.
Is M60.009 billable?
- Yes. M60.009 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M60.009 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M60.009 as a principal diagnosis.
Is M60.009 a CC or MCC?
- M60.009 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.