ICD-10 Code for Myositis

The ICD-10-CM code for myositis is M60.9 — Myositis, unspecified. This is the code the Alphabetic Index gives for myositis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).

BillableUnspecified

M60.9 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.

Which myositis code should you use?

The Alphabetic Index lists 93 codes under Myositis. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.

By type

clostridial	A48.0	Gas gangrene
epidemic	B33.0	Epidemic myalgia
fibrosa or fibrous, Volkmann's	T79.6	Traumatic ischemia of muscle	not billable
inclusion body [IBM]	G72.41	Inclusion body myositis [IBM]
infective	M60.009	Infective myositis, unspecified site
interstitial	M60.10	Interstitial myositis of unspecified site
mycotic	B49	Unspecified mycosis
orbital, chronic	H05.12	Orbital myositis	not billable
specified type NEC	M60.80	Other myositis, unspecified site

Myositis in

bilharziasis	B65.9	Schistosomiasis, unspecified
cysticercosis	B69.81	Myositis in cysticercosis
leprosy	A30.9	Leprosy, unspecified
mycosis	B49	Unspecified mycosis
sarcoidosis	D86.87	Sarcoid myositis
schistosomiasis	B65.9	Schistosomiasis, unspecified
toxoplasmosis	B58.82	Toxoplasma myositis
trichinellosis	B75	Trichinellosis
tuberculosis	A18.09	Other musculoskeletal tuberculosis
syphilis › late	A52.78	Syphilis of other musculoskeletal tissue
syphilis › secondary	A51.49	Other secondary syphilitic conditions

Myositis infective

arm	M60.002	Infective myositis, unspecified arm
leg	M60.005	Infective myositis, unspecified leg
lower limb	M60.005	Infective myositis, unspecified leg
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
arm › left	M60.001	Infective myositis, unspecified left arm
arm › right	M60.000	Infective myositis, unspecified right arm
leg › left	M60.004	Infective myositis, unspecified left leg
leg › right	M60.003	Infective myositis, unspecified right leg
lower limb › ankle	M60.07	Infective myositis, ankle, foot and toes	not billable
lower limb › foot	M60.07	Infective myositis, ankle, foot and toes	not billable
lower limb › lower leg	M60.06	Infective myositis, lower leg	not billable
lower limb › thigh	M60.05	Infective myositis, thigh	not billable
lower limb › toe	M60.07	Infective myositis, ankle, foot and toes	not billable
upper limb › finger	M60.04	Infective myositis, hand and fingers	not billable
upper limb › forearm	M60.03	Infective myositis, forearm	not billable
upper limb › hand	M60.04	Infective myositis, hand and fingers	not billable
upper limb › shoulder region	M60.01	Infective myositis, shoulder	not billable
upper limb › upper arm	M60.02	Infective myositis, upper arm	not billable

Myositis interstitial

ankle	M60.17	Interstitial myositis, ankle and foot	not billable
foot	M60.17	Interstitial myositis, ankle and foot	not billable
forearm	M60.13	Interstitial myositis, forearm	not billable
hand	M60.14	Interstitial myositis, hand	not billable
lower leg	M60.16	Interstitial myositis, lower leg	not billable
multiple sites	M60.19	Interstitial myositis, multiple sites
shoulder region	M60.11	Interstitial myositis, shoulder	not billable
specified site NEC	M60.18	Interstitial myositis, other site
thigh	M60.15	Interstitial myositis, thigh	not billable
upper arm	M60.12	Interstitial myositis, upper arm	not billable

Myositis ossificans or ossifying

progressiva	M61.10	Myositis ossificans progressiva, unspecified site
traumatica	M61.00	Myositis ossificans traumatica, unspecified site
in › burns	M61.30	Calcification and ossification of muscles associated with burns, unspecified site
in › quadriplegia or paraplegia	M61.20	Paralytic calcification and ossification of muscle, unspecified site
progressiva › ankle	M61.17	Myositis ossificans progressiva, ankle, foot and toe(s)	not billable
progressiva › finger	M61.14	Myositis ossificans progressiva, hand and finger(s)	not billable
progressiva › foot	M61.17	Myositis ossificans progressiva, ankle, foot and toe(s)	not billable
progressiva › forearm	M61.13	Myositis ossificans progressiva, forearm	not billable
progressiva › hand	M61.14	Myositis ossificans progressiva, hand and finger(s)	not billable
progressiva › lower leg	M61.16	Myositis ossificans progressiva, lower leg	not billable
progressiva › multiple sites	M61.19	Myositis ossificans progressiva, multiple sites
progressiva › pelvic region	M61.15	Myositis ossificans progressiva, thigh	not billable
progressiva › shoulder region	M61.11	Myositis ossificans progressiva, shoulder	not billable
progressiva › specified site NEC	M61.18	Myositis ossificans progressiva, other site
progressiva › thigh	M61.15	Myositis ossificans progressiva, thigh	not billable
progressiva › toe	M61.17	Myositis ossificans progressiva, ankle, foot and toe(s)	not billable
progressiva › upper arm	M61.12	Myositis ossificans progressiva, upper arm	not billable
traumatica › ankle	M61.07	Myositis ossificans traumatica, ankle and foot	not billable
traumatica › foot	M61.07	Myositis ossificans traumatica, ankle and foot	not billable
traumatica › forearm	M61.03	Myositis ossificans traumatica, forearm	not billable
traumatica › hand	M61.04	Myositis ossificans traumatica, hand	not billable
traumatica › lower leg	M61.06	Myositis ossificans traumatica, lower leg	not billable
traumatica › multiple sites	M61.09	Myositis ossificans traumatica, multiple sites
traumatica › pelvic region	M61.05	Myositis ossificans traumatica, thigh	not billable
traumatica › shoulder region	M61.01	Myositis ossificans traumatica, shoulder	not billable
traumatica › specified site NEC	M61.08	Myositis ossificans traumatica, other site
traumatica › thigh	M61.05	Myositis ossificans traumatica, thigh	not billable
traumatica › upper arm	M61.02	Myositis ossificans traumatica, upper arm	not billable
in › burns › ankle	M61.37	Calcification and ossification of muscles associated with burns, ankle and foot	not billable
in › burns › foot	M61.37	Calcification and ossification of muscles associated with burns, ankle and foot	not billable
in › burns › forearm	M61.33	Calcification and ossification of muscles associated with burns, forearm	not billable
in › burns › hand	M61.34	Calcification and ossification of muscles associated with burns, hand	not billable
in › burns › lower leg	M61.36	Calcification and ossification of muscles associated with burns, lower leg	not billable
in › burns › multiple sites	M61.39	Calcification and ossification of muscles associated with burns, multiple sites
in › burns › pelvic region	M61.35	Calcification and ossification of muscles associated with burns, thigh	not billable
in › burns › shoulder region	M61.31	Calcification and ossification of muscles associated with burns, shoulder	not billable
in › burns › specified site NEC	M61.38	Calcification and ossification of muscles associated with burns, other site
in › burns › thigh	M61.35	Calcification and ossification of muscles associated with burns, thigh	not billable
in › burns › upper arm	M61.32	Calcification and ossification of muscles associated with burns, upper arm	not billable
in › quadriplegia or paraplegia › ankle	M61.27	Paralytic calcification and ossification of muscle, ankle and foot	not billable
in › quadriplegia or paraplegia › foot	M61.27	Paralytic calcification and ossification of muscle, ankle and foot	not billable
in › quadriplegia or paraplegia › forearm	M61.23	Paralytic calcification and ossification of muscle, forearm	not billable
in › quadriplegia or paraplegia › hand	M61.24	Paralytic calcification and ossification of muscle, hand	not billable
in › quadriplegia or paraplegia › lower leg	M61.26	Paralytic calcification and ossification of muscle, lower leg	not billable
in › quadriplegia or paraplegia › multiple sites	M61.29	Paralytic calcification and ossification of muscle, multiple sites
in › quadriplegia or paraplegia › pelvic region	M61.25	Paralytic calcification and ossification of muscle, thigh	not billable
in › quadriplegia or paraplegia › shoulder region	M61.21	Paralytic calcification and ossification of muscle, shoulder	not billable
in › quadriplegia or paraplegia › specified site NEC	M61.28	Paralytic calcification and ossification of muscle, other site
in › quadriplegia or paraplegia › thigh	M61.25	Paralytic calcification and ossification of muscle, thigh	not billable
in › quadriplegia or paraplegia › upper arm	M61.22	Paralytic calcification and ossification of muscle, upper arm	not billable

Myositis specified type NEC

ankle	M60.87	Other myositis, ankle and foot	not billable
foot	M60.87	Other myositis, ankle and foot	not billable
forearm	M60.83	Other myositis, forearm	not billable
hand	M60.84	Other myositis, hand	not billable
lower leg	M60.86	Other myositis, lower leg	not billable
multiple sites	M60.89	Other myositis, multiple sites
pelvic region	M60.85	Other myositis, thigh	not billable
shoulder region	M60.81	Other myositis shoulder	not billable
specified site NEC	M60.88	Other myositis, other site
thigh	M60.85	Other myositis, thigh	not billable
upper arm	M60.82	Other myositis, upper arm	not billable

Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources