ICD-10 · PDGM grouping

M91-M94 — Chondropathies

Every ICD-10-CM code in this range and the PDGM clinical group CMS assigns to it, read from the CMS grouper crosswalk v07.1.26.

OASIS-E2 v1.00.0 · ingested 2026-04-26

Codes in range

212

No clinical group

A period cannot be grouped from these.

Barred as primary

CMS rejects these in the primary position.

Where these codes group

147 of the 212 codes in M91-M94 group to Musculoskeletal Rehabilitation. A further 65 are assigned no clinical group at all, which means a 30-day period cannot be grouped from them.

EMusculoskeletal Rehabilitation147

Every code in M91-M94

Descriptions are CMS’s own, abbreviated as CMS abbreviates them.

Code	Description	Clinical group	Primary position
M910	Juvenile osteochondrosis of pelvis	E	Accepted
M9110	Juvenile osteochondrosis of head of femur, unspecified leg	None	Cannot group
M9111	Juvenile osteochondrosis of head of femur, right leg	E	Accepted
M9112	Juvenile osteochondrosis of head of femur, left leg	E	Accepted
M9120	Coxa plana, unspecified hip	None	Cannot group
M9121	Coxa plana, right hip	E	Accepted
M9122	Coxa plana, left hip	E	Accepted
M9130	Pseudocoxalgia, unspecified hip	None	Cannot group
M9131	Pseudocoxalgia, right hip	E	Accepted
M9132	Pseudocoxalgia, left hip	E	Accepted
M9140	Coxa magna, unspecified hip	None	Cannot group
M9141	Coxa magna, right hip	E	Accepted
M9142	Coxa magna, left hip	E	Accepted
M9180	Other juvenile osteochondrosis of hip and pelvis, unsp leg	None	Cannot group
M9181	Other juvenile osteochondrosis of hip and pelvis, right leg	E	Accepted
M9182	Other juvenile osteochondrosis of hip and pelvis, left leg	E	Accepted
M9190	Juvenile osteochondrosis of hip and pelvis, unsp, unsp leg	None	Cannot group
M9191	Juvenile osteochondrosis of hip and pelvis, unsp, right leg	E	Accepted
M9192	Juvenile osteochondrosis of hip and pelvis, unsp, left leg	E	Accepted
M9200	Juvenile osteochondrosis of humerus, unspecified arm	None	Cannot group
M9201	Juvenile osteochondrosis of humerus, right arm	E	Accepted
M9202	Juvenile osteochondrosis of humerus, left arm	E	Accepted
M9210	Juvenile osteochondrosis of radius and ulna, unspecified arm	None	Cannot group
M9211	Juvenile osteochondrosis of radius and ulna, right arm	E	Accepted
M9212	Juvenile osteochondrosis of radius and ulna, left arm	E	Accepted
M92201	Unspecified juvenile osteochondrosis, right hand	E	Accepted
M92202	Unspecified juvenile osteochondrosis, left hand	E	Accepted
M92209	Unspecified juvenile osteochondrosis, unspecified hand	None	Cannot group
M92211	Osteochondrosis (juvenile) of carpal lunate, right hand	E	Accepted
M92212	Osteochondrosis (juvenile) of carpal lunate, left hand	E	Accepted
M92219	Osteochondrosis (juvenile) of carpal lunate, unsp hand	None	Cannot group
M92221	Osteochondrosis (juvenile) of metacarpal heads, right hand	E	Accepted
M92222	Osteochondrosis (juvenile) of metacarpal heads, left hand	E	Accepted
M92229	Osteochondrosis (juvenile) of metacarpal heads, unsp hand	None	Cannot group
M92291	Other juvenile osteochondrosis, right hand	E	Accepted
M92292	Other juvenile osteochondrosis, left hand	E	Accepted
M92299	Other juvenile osteochondrosis, unspecified hand	None	Cannot group
M9230	Other juvenile osteochondrosis, unspecified upper limb	None	Cannot group
M9231	Other juvenile osteochondrosis, right upper limb	E	Accepted
M9232	Other juvenile osteochondrosis, left upper limb	E	Accepted
M9240	Juvenile osteochondrosis of patella, unspecified knee	None	Cannot group
M9241	Juvenile osteochondrosis of patella, right knee	E	Accepted
M9242	Juvenile osteochondrosis of patella, left knee	E	Accepted
M92501	Unspecified juvenile osteochondrosis, right leg	E	Accepted
M92502	Unspecified juvenile osteochondrosis, left leg	E	Accepted
M92503	Unspecified juvenile osteochondrosis, bilateral leg	E	Accepted
M92509	Unspecified juvenile osteochondrosis, unspecified leg	None	Cannot group
M92511	Juvenile osteochondrosis of proximal tibia, right leg	E	Accepted
M92512	Juvenile osteochondrosis of proximal tibia, left leg	E	Accepted
M92513	Juvenile osteochondrosis of proximal tibia, bilateral	E	Accepted
M92519	Juvenile osteochondrosis of proximal tibia, unspecified leg	None	Cannot group
M92521	Juvenile osteochondrosis of tibia tubercle, right leg	E	Accepted
M92522	Juvenile osteochondrosis of tibia tubercle, left leg	E	Accepted
M92523	Juvenile osteochondrosis of tibia tubercle, bilateral	E	Accepted
M92529	Juvenile osteochondrosis of tibia tubercle, unspecified leg	None	Cannot group
M92591	Other juvenile osteochon of tibia and fibula, right leg	E	Accepted
M92592	Other juvenile osteochondrosis of tibia and fibula, left leg	E	Accepted
M92593	Other juvenile osteochon of tibia and fibula, bilateral	E	Accepted
M92599	Other juvenile osteochon of tibia and fibula, unsp leg	None	Cannot group
M9260	Juvenile osteochondrosis of tarsus, unspecified ankle	None	Cannot group
M9261	Juvenile osteochondrosis of tarsus, right ankle	E	Accepted
M9262	Juvenile osteochondrosis of tarsus, left ankle	E	Accepted
M9270	Juvenile osteochondrosis of metatarsus, unspecified foot	None	Cannot group
M9271	Juvenile osteochondrosis of metatarsus, right foot	E	Accepted
M9272	Juvenile osteochondrosis of metatarsus, left foot	E	Accepted
M928	Other specified juvenile osteochondrosis	E	Accepted
M929	Juvenile osteochondrosis, unspecified	None	Cannot group
M93001	Unsp slipped upper femoral epiphysis, right hip	E	Accepted
M93002	Unsp slipped upper femoral epiphysis, left hip	E	Accepted
M93003	Unsp slipped upper femoral epiphysis, unsp hip	None	Cannot group
M93004	Unspecified slipped upper femoral epiphysis, bilateral hips	E	Accepted
M93011	Acute slipped upper femoral epiphysis, stable, right hip	E	Accepted
M93012	Acute slipped upper femoral epiphysis, stable, left hip	E	Accepted
M93013	Acute slipped upper femoral epiphysis, stable, unsp hip	None	Cannot group
M93014	Acute slipped upper femoral epiphysis, stable, bi hips	E	Accepted
M93021	Chronic slipped upper femoral epiphysis, stable, right hip	E	Accepted
M93022	Chronic slipped upper femoral epiphysis, stable, left hip	E	Accepted
M93023	Chronic slipped upper femoral epiphysis, stable, unsp hip	None	Cannot group
M93024	Chronic slipped upper femoral epiphysis, stable, bi hips	E	Accepted
M93031	Acute on chr slipped upper femoral epiphy, stable, r hip	E	Accepted
M93032	Acute on chr slipped upper femoral epiphy, stable, l hip	E	Accepted
M93033	Acute on chr slipped upper femoral epiphy, stable, unsp hip	None	Cannot group
M93034	Acute on chr slipped upper femoral epiphy, stable, bi hips	E	Accepted
M93041	Acute slipped upper femoral epiphysis, unstable, right hip	E	Accepted
M93042	Acute slipped upper femoral epiphysis, unstable, left hip	E	Accepted
M93043	Acute slipped upper femoral epiphysis, unstable, unsp hip	None	Cannot group
M93044	Acute slipped upper femoral epiphysis, unstable, bi hips	E	Accepted
M93051	Acute on chr slipped upper femoral epiphy, unstbl, r hip	E	Accepted
M93052	Acute on chr slipped upper femoral epiphy, unstbl, l hip	E	Accepted
M93053	Acute on chr slipped upper femoral epiphy, unstbl, unsp hip	None	Cannot group
M93054	Acute on chr slipped upper femoral epiphy, unstbl, bi hips	E	Accepted
M93061	Acute slipped upper femoral epiphy, unsp stability, r hip	E	Accepted
M93062	Acute slipped upper femoral epiphy, unsp stability, l hip	E	Accepted
M93063	Acute slipped upper fem epiphy, unsp stability, unsp hip	None	Cannot group
M93064	Acute slipped upper femoral epiphy, unsp stability, bi hips	E	Accepted
M93071	Acute on chr slip upper fem epiphy, unsp stability, r hip	E	Accepted
M93072	Acute on chr slip upper fem epiphy, unsp stability, l hip	E	Accepted
M93073	Ac on chr slip upper fem epiphy, unsp stability, unsp hip	None	Cannot group
M93074	Acute on chr slip upper fem epiphy, unsp stability, bi hips	E	Accepted
M931	Kienbock's disease of adults	E	Accepted
M9320	Osteochondritis dissecans of unspecified site	None	Cannot group
M93211	Osteochondritis dissecans, right shoulder	E	Accepted
M93212	Osteochondritis dissecans, left shoulder	E	Accepted
M93219	Osteochondritis dissecans, unspecified shoulder	None	Cannot group
M93221	Osteochondritis dissecans, right elbow	E	Accepted
M93222	Osteochondritis dissecans, left elbow	E	Accepted
M93229	Osteochondritis dissecans, unspecified elbow	None	Cannot group
M93231	Osteochondritis dissecans, right wrist	E	Accepted
M93232	Osteochondritis dissecans, left wrist	E	Accepted
M93239	Osteochondritis dissecans, unspecified wrist	None	Cannot group
M93241	Osteochondritis dissecans, joints of right hand	E	Accepted
M93242	Osteochondritis dissecans, joints of left hand	E	Accepted
M93249	Osteochondritis dissecans, joints of unspecified hand	None	Cannot group
M93251	Osteochondritis dissecans, right hip	E	Accepted
M93252	Osteochondritis dissecans, left hip	E	Accepted
M93259	Osteochondritis dissecans, unspecified hip	None	Cannot group
M93261	Osteochondritis dissecans, right knee	E	Accepted
M93262	Osteochondritis dissecans, left knee	E	Accepted
M93269	Osteochondritis dissecans, unspecified knee	None	Cannot group
M93271	Osteochondritis dissecans, r ankle and joints of right foot	E	Accepted
M93272	Osteochondritis dissecans, l ankle and joints of left foot	E	Accepted
M93279	Osteochondritis dissecans, unsp ankle and joints of foot	None	Cannot group
M9328	Osteochondritis dissecans other site	E	Accepted
M9329	Osteochondritis dissecans multiple sites	E	Accepted
M9380	Other specified osteochondropathies of unspecified site	None	Cannot group
M93811	Other specified osteochondropathies, right shoulder	E	Accepted
M93812	Other specified osteochondropathies, left shoulder	E	Accepted
M93819	Other specified osteochondropathies, unspecified shoulder	None	Cannot group
M93821	Other specified osteochondropathies, right upper arm	E	Accepted
M93822	Other specified osteochondropathies, left upper arm	E	Accepted
M93829	Other specified osteochondropathies, unspecified upper arm	None	Cannot group
M93831	Other specified osteochondropathies, right forearm	E	Accepted
M93832	Other specified osteochondropathies, left forearm	E	Accepted
M93839	Other specified osteochondropathies, unspecified forearm	None	Cannot group
M93841	Other specified osteochondropathies, right hand	E	Accepted
M93842	Other specified osteochondropathies, left hand	E	Accepted
M93849	Other specified osteochondropathies, unspecified hand	None	Cannot group
M93851	Other specified osteochondropathies, right thigh	E	Accepted
M93852	Other specified osteochondropathies, left thigh	E	Accepted
M93859	Other specified osteochondropathies, unspecified thigh	None	Cannot group
M93861	Other specified osteochondropathies, right lower leg	E	Accepted
M93862	Other specified osteochondropathies, left lower leg	E	Accepted
M93869	Other specified osteochondropathies, unspecified lower leg	None	Cannot group
M93871	Other specified osteochondropathies, right ankle and foot	E	Accepted
M93872	Other specified osteochondropathies, left ankle and foot	E	Accepted
M93879	Oth osteochondropathies, unspecified ankle and foot	None	Cannot group
M9388	Other specified osteochondropathies other	E	Accepted
M9389	Other specified osteochondropathies multiple sites	E	Accepted
M9390	Osteochondropathy, unspecified of unspecified site	None	Cannot group
M93911	Osteochondropathy, unspecified, right shoulder	E	Accepted
M93912	Osteochondropathy, unspecified, left shoulder	E	Accepted
M93919	Osteochondropathy, unspecified, unspecified shoulder	None	Cannot group
M93921	Osteochondropathy, unspecified, right upper arm	E	Accepted
M93922	Osteochondropathy, unspecified, left upper arm	E	Accepted
M93929	Osteochondropathy, unspecified, unspecified upper arm	None	Cannot group
M93931	Osteochondropathy, unspecified, right forearm	E	Accepted
M93932	Osteochondropathy, unspecified, left forearm	E	Accepted
M93939	Osteochondropathy, unspecified, unspecified forearm	None	Cannot group
M93941	Osteochondropathy, unspecified, right hand	E	Accepted
M93942	Osteochondropathy, unspecified, left hand	E	Accepted
M93949	Osteochondropathy, unspecified, unspecified hand	None	Cannot group
M93951	Osteochondropathy, unspecified, right thigh	E	Accepted
M93952	Osteochondropathy, unspecified, left thigh	E	Accepted
M93959	Osteochondropathy, unspecified, unspecified thigh	None	Cannot group
M93961	Osteochondropathy, unspecified, right lower leg	E	Accepted
M93962	Osteochondropathy, unspecified, left lower leg	E	Accepted
M93969	Osteochondropathy, unspecified, unspecified lower leg	None	Cannot group
M93971	Osteochondropathy, unspecified, right ankle and foot	E	Accepted
M93972	Osteochondropathy, unspecified, left ankle and foot	E	Accepted
M93979	Osteochondropathy, unspecified, unspecified ankle and foot	None	Cannot group
M9398	Osteochondropathy, unspecified other	None	Cannot group
M9399	Osteochondropathy, unspecified multiple sites	E	Accepted
M940	Chondrocostal junction syndrome [Tietze]	E	Accepted
M941	Relapsing polychondritis	E	Accepted
M9420	Chondromalacia, unspecified site	None	Cannot group
M94211	Chondromalacia, right shoulder	E	Accepted
M94212	Chondromalacia, left shoulder	E	Accepted
M94219	Chondromalacia, unspecified shoulder	None	Cannot group
M94221	Chondromalacia, right elbow	E	Accepted
M94222	Chondromalacia, left elbow	E	Accepted
M94229	Chondromalacia, unspecified elbow	None	Cannot group
M94231	Chondromalacia, right wrist	E	Accepted
M94232	Chondromalacia, left wrist	E	Accepted
M94239	Chondromalacia, unspecified wrist	None	Cannot group
M94241	Chondromalacia, joints of right hand	E	Accepted
M94242	Chondromalacia, joints of left hand	E	Accepted
M94249	Chondromalacia, joints of unspecified hand	None	Cannot group
M94251	Chondromalacia, right hip	E	Accepted
M94252	Chondromalacia, left hip	E	Accepted
M94259	Chondromalacia, unspecified hip	None	Cannot group
M94261	Chondromalacia, right knee	E	Accepted
M94262	Chondromalacia, left knee	E	Accepted
M94269	Chondromalacia, unspecified knee	None	Cannot group
M94271	Chondromalacia, right ankle and joints of right foot	E	Accepted
M94272	Chondromalacia, left ankle and joints of left foot	E	Accepted
M94279	Chondromalacia, unspecified ankle and joints of foot	None	Cannot group
M9428	Chondromalacia, other site	E	Accepted
M9429	Chondromalacia, multiple sites	E	Accepted
M94351	Chondrolysis, right hip	E	Accepted
M94352	Chondrolysis, left hip	E	Accepted
M94359	Chondrolysis, unspecified hip	None	Cannot group
M948X0	Other specified disorders of cartilage, multiple sites	E	Accepted
M948X1	Other specified disorders of cartilage, shoulder	E	Accepted
M948X2	Other specified disorders of cartilage, upper arm	E	Accepted
M948X3	Other specified disorders of cartilage, forearm	E	Accepted
M948X4	Other specified disorders of cartilage, hand	E	Accepted
M948X5	Other specified disorders of cartilage, thigh	E	Accepted
M948X6	Other specified disorders of cartilage, lower leg	E	Accepted
M948X7	Other specified disorders of cartilage, ankle and foot	E	Accepted
M948X8	Other specified disorders of cartilage, other site	E	Accepted
M948X9	Other specified disorders of cartilage, unspecified sites	None	Cannot group
M949	Disorder of cartilage, unspecified	None	Cannot group

Source: CMS HH PPS Grouper Software v07.1.26, effective 2026-04-01. This is the crosswalk Medicare runs a claim through. Grouping also depends on admission source, timing, the OASIS functional items and the rest of the diagnosis list.

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M91-M94 — Chondropathies

Where these codes group

Every code in M91-M94

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