M21.069

Valgus deformity, not elsewhere classified, unspecified knee

FY2027Chapter 13: Diseases of the musculoskeletal system and connective tissue/M20–M25 Other joint disorders

BillableComplete code, valid to report

M21.069 (also written M21069) is a billable ICD-10-CM diagnosis code for valgus deformity, not elsewhere classified, unspecified knee. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 124 codes in category M21 (Other acquired deformities of limbs). Its coding notes include 5 Excludes1 entries and 13 Excludes2 entries.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Inherited from M21.0 Valgus deformity, not elsewhere classified
  • metatarsus valgus (Q66.6)
  • talipes calcaneovalgus (Q66.4-)
Inherited from M21 Other acquired deformities of limbs
  • acquired absence of limb (Z89.-)
  • congenital absence of limbs (Q71-Q73)
  • congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Inherited from M21 Other acquired deformities of limbs
  • acquired deformities of fingers or toes (M20.-)
  • coxa plana (M91.2)
Also from chapter/block level (11 notes)
Inherited from M20–M25 Other joint disorders
Inherited from Chapter 13 Diseases of the musculoskeletal system and connective tissue
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Notes

Also from chapter/block level (1 note)
Inherited from Chapter 13 Diseases of the musculoskeletal system and connective tissue
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition