M20.21
BillableHallux rigidus, right foot
Hallux rigidus, right foot
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- 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)
- joints of the spine (M40-M54)
Also Known As / Clinical Terms
SNOMED CT
- Acquired hallux rigidus6654000
- HR - Hallux rigidus6654000
- Hallux rigidus6654000
- Hallux rigidus - acquired6654000
- Rigidity of 1st MTP joint6654000
- Acquired hallux limitus of bilateral great toes15636171000119102
- Bilateral acquired hallux limitus of great toes15636171000119102
- Acquired hallux rigidus of bilateral feet15934101000119103
- Bilateral acquired hallux rigidus of bilateral feet15934101000119103
- Acquired left hallux rigidus446341000124105
- Acquired right hallux rigidus446331000124100
Frequently Asked Questions
What is the ICD-10 code for hallux rigidus, right foot?
The ICD-10-CM code for hallux rigidus, right foot is M20.21. The full clinical description is "Hallux rigidus, right foot". M20.21 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code M20.21 mean?
ICD-10-CM code M20.21 represents "Hallux rigidus, right foot". It is classified under Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue and is a billable/specific code that can be used on a claim.
Is M20.21 a billable code?
Yes, M20.21 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is M20.21 in?
M20.21 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M20.21?
M20.21 has Excludes1 notes indicating codes that cannot be used together with it, including: 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.-).
What SNOMED CT codes does M20.21 map to?
M20.21 maps to 5 SNOMED CT concepts: 15636171000119102, 6654000, 15934101000119103, 446341000124105, 446331000124100. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for M20.21?
M20.21 is linked to 1 UMLS Concept Unique Identifier: C2028365. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.