M91.2 ICD-10-CA code: Coxa plana
M91.2 is the ICD-10-CA code for “Coxa plana” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
M91.2Coxa plana
ICD-10-CA · Canada · Also written M912
Index terms
Entries in CIHI’s alphabetical index that lead to M91.2. Searching the index by the condition the note names is how coders reach this code.
- Coxa, plana
- Flattening, hip
- Deformity, hip (joint) (acquired), due to (previous) juvenile osteochondrosis
Notes for M91.2
As CIHI prints them, with any note M91.2 takes from the headings above it.
Includes
- Hip deformity due to previous juvenile osteochondrosis
Excludes
Conditions classified elsewhere.
- Slipped upper femoral epiphysis (nontraumatic) (M93.0)From M91 Juvenile osteochondrosis of hip and pelvis
- Postprocedural chondropathies (M96.-)From M91-M94 Chondropathies
- Certain:• conditions originating in the perinatal period (P00-P96)• disorders of the temporomandibular joint (K07.6)• infectious and parasitic diseases (A00-B99)compartment syndrome (T79.6)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
Note
- The following fifth characters represent the following sites of involvement:0 Multiple sites1 Shoulder region: clavical , scapula — joint acromioclavicular, glenohumeral, sternoclavicular2 Upper arm: humerus — elbow joint,3 Forearm: radius , ulna — wrist joint,4 Hand: carpus, fingers, metacarpus — joints between these bones,5 Pelvic region and thigh: buttock , femur , pelvis — joint hip , sacroiliac6 Lower leg: fibula , tibia — knee joint7 Ankle and foot: metatarsus, tarsus, toes — other joints in foot8 Other:head neck ribs skull trunk vertebral column9 Site unspecifiedFrom Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
Where M91.2 sits
- 1ChapterChapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99)
- 2Block M80-M94Osteopathies and chondropathies
- 3Block M91-M94Chondropathies
- 4Category M91Juvenile osteochondrosis of hip and pelvis
- 5Valid code M91.2Coxa plana
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code M91.2 mean?
M91.2 is the ICD-10-CA code for “Coxa plana” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is M91.2 in ICD-10-CA?
M91.2 sits under M91 Juvenile osteochondrosis of hip and pelvis, within M91-M94 Chondropathies, within M80-M94 Osteopathies and chondropathies, within Chapter 13: Diseases of the musculoskeletal system and connective tissue (M00-M99).
What coding notes apply to M91.2?
ICD-10-CA lists Includes, Excludes, Note notes for M91.2, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.