In simple words: This refers to deformities in the fingers or toes that develop over time, not present at birth, often due to injury, abnormal tendon tension, or conditions such as rheumatoid arthritis, affecting normal activities.

Acquired deformities of the fingers and toes encompass structural changes in bones or soft tissues, impeding normal activities due to injury, tendon abnormalities, or diseases like rheumatoid arthritis.

Example 1: A patient develops a Boutonnière deformity in their finger after an injury., A patient with rheumatoid arthritis experiences deformities in their toes., A patient develops a mallet finger due to a sports injury.

Type, location, laterality, and cause of the deformity should be documented.

** Excludes1: acquired absence of fingers and toes (Z89.-), congenital absence of fingers and toes (Q71.3-, Q72.3-), congenital deformities and malformations of fingers and toes (Q66.-, Q68-Q70, Q74.-). Excludes2: 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).