FY2027 ICD-10-CM reference
G57: Mononeuropathies of lower limb
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Mononeuropathies of lower limb. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Nonbillable heading. Verified against the official FY2027 order file.
CMS-HCC V28
Not applicable to this nonbillable heading
CMS-HCC V24
Not applicable to this nonbillable heading
ESRD
Not applicable to this nonbillable heading
PACE
Not applicable to this nonbillable heading
RxHCC
Not applicable to this nonbillable heading
HHS-HCC
Not applicable to this nonbillable heading
More specific FY2027 codes
- G57.0: Lesion of sciatic nerveNonbillable heading
- G57.1: Meralgia parestheticaNonbillable heading
- G57.2: Lesion of femoral nerveNonbillable heading
- G57.3: Lesion of lateral popliteal nerveNonbillable heading
- G57.4: Lesion of medial popliteal nerveNonbillable heading
- G57.5: Tarsal tunnel syndromeNonbillable heading
- G57.6: Lesion of plantar nerveNonbillable heading
- G57.7: Causalgia of lower limbNonbillable heading
- G57.8: Other specified mononeuropathies of lower limbNonbillable heading
- G57.9: Unspecified mononeuropathy of lower limbNonbillable heading
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Excludes2
certain conditions originating in the perinatal period (P04-P96)
Source: G00-G99 (chapter, inherited).
Excludes2
certain infectious and parasitic diseases (A00-B99)
Source: G00-G99 (chapter, inherited).
Excludes2
complications of pregnancy, childbirth and the puerperium (O00-O9A)
Source: G00-G99 (chapter, inherited).
Excludes2
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
Source: G00-G99 (chapter, inherited).
Excludes2
endocrine, nutritional and metabolic diseases (E00-E88)
Source: G00-G99 (chapter, inherited).
Excludes2
injury, poisoning and certain other consequences of external causes (S00-T88)
Source: G00-G99 (chapter, inherited).
Excludes2
neoplasms (C00-D49)
Source: G00-G99 (chapter, inherited).
Excludes2
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Source: G00-G99 (chapter, inherited).
Excludes1
current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region
Source: G50-G59 (section, inherited).
Excludes1
neuralgia NOS (M79.2)
Source: G50-G59 (section, inherited).
Excludes1
neuritis NOS (M79.2)
Source: G50-G59 (section, inherited).
Excludes1
peripheral neuritis in pregnancy (O26.82-)
Source: G50-G59 (section, inherited).
Excludes1
radiculitis NOS (M54.1-)
Source: G50-G59 (section, inherited).
Excludes1
current traumatic nerve disorder - see nerve injury by body region
Source: G57 (category, direct).
Compare the FY2027 additions, removals and billable-status changes
What does G57 mean in FY2027?
The official ICD-10-CM descriptor is Mononeuropathies of lower limb. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is G57 billable in FY2027?
The FY2027 order file marks G57 as a nonbillable heading. Select a complete billable child code.
Does G57 map to an HCC?
Risk-model mapping is not applicable to this nonbillable heading. Check a complete billable child code.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition