Interstitial myositis
Interstitial myositis
M60.1 is a header (parent) code in the ICD-10-CM hierarchy. It is not billable for claim submission. Use one of the billable child codes listed below.
Billable codes in this category
Each of the codes below is billable. Choose the one that most accurately describes the patient's diagnosis.
Interstitial myositis affecting a muscle site that is not specified in the clinical documentation — use only when the affected anatomic location cannot be determined or was not documented.
M60.18 classifies interstitial myositis occurring at a body site not captured by any other specific subcategory under M60.1 — meaning not the shoulder, upper arm, forearm, hand, thigh, lower leg, or ankle/foot.
Interstitial myositis involving two or more anatomical muscle sites, classified under non-infective inflammatory muscle disorders in Chapter 13.