2027 ICD-10-CM Diagnosis Code Q72.31Congenital absence of right foot and toe(s)

ICD-10-CM Codes›Q00-Q99›Q65-Q79›Q72

ICD-10-CM Q72.31
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Q72.31 is a billable ICD-10-CM diagnosis code for congenital absence of right foot and toe(s). It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 564 through 566. The code is exempt from POA reporting. Coders also document this condition as congenital absence of right foot. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Musculoskeletal congenital conditions.

Code Identity

ICD-10-CM Code
Q72.31
Billable Status
Yes — Valid for Submission
Code Describes
Congenital absence of right foot and toe(s)
Short Description
Congenital absence of right foot and toe(s)
Same as the full description in the CMS dataset.
Parent Code
Q72.3
Congenital absence of foot and toe(s)

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ65-Q79Congenital malformations and deformations of the musculoskeletal system
CategoryQ72Reduction defects of lower limb
This CodeQ72.31Congenital absence of right foot and toe(s)

Present on Admission (POA)Billing

Q72.31 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Congenital malformations and deformations of the musculoskeletal system (Q65-Q79).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Congenital absence of right foot
  • Congenital absence of toe of right foot

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Q72.31: its own notes plus those printed at Chapter 17. A note printed at a category, block or chapter applies to every code under it.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • inborn errors of metabolism (E70-E88)

Notes

General instructions on how these codes are used.

From Chapter 17 (Q00-QA1) Congenital malformations, deformations and chromosomal abnormalities applies to 900 codes
  • Codes from this chapter are not for use on maternal records

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Q72.31, its category, or a range that includes it.

Excludes1 6

These codes carry an Excludes1 note naming Q72.31: they are not reported together with it, unless the two conditions are unrelated.

  • M20 Acquired deformities of fingers and toes
    congenital absence of fingers and toes (Q71.3-, Q72.3-) names Q72.3-, which includes this code
  • Q66 Congenital deformities of feet
    reduction defects of feet (Q72.-) names Q72.-, which includes this code
  • M21 Other acquired deformities of limbs
    congenital absence of limbs (Q71-Q73) names Q71-Q73, which includes this code
  • Q68 Other congenital musculoskeletal deformities
    reduction defects of limb(s) (Q71-Q73) names Q71-Q73, which includes this code
  • Q74 Other congenital malformations of limb(s)
    reduction defect of limb (Q71-Q73) names Q71-Q73, which includes this code
  • Z89 Acquired absence of limb
    congenital absence of limbs (Q71-Q73) names Q71-Q73, which includes this code

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MAL008
Musculoskeletal congenital conditions
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Birth Defects

A birth defect is a problem that happens while a baby is developing in the mother's body. Most birth defects happen during the first 3 months of pregnancy. One out of every 33 babies in the United States is born with a birth defect.

The full article covers:

  • What are birth defects?
  • What causes birth defects?
  • Who is at risk of having a baby with birth defects?
  • How are birth defects diagnosed?
  • What are the treatments for birth defects?
  • Can birth defects be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Q72.31 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
755.38 Longitudinal defic foot
Approximate The match is approximate rather than exact.
ICD-9-CM
755.39 Longitud defic phalanges
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Q72.31Overview

What is the ICD-10 code for congenital absence of right foot and toe(s)?

The ICD-10-CM code for congenital absence of right foot and toe(s) is Q72.31 (sometimes written as Q7231). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is Q72.31 (Congenital absence of foot and toe(s)) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report congenital absence of right foot and toe(s) on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Q72.31 group to?

When congenital absence of right foot and toe(s) is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 566, 565, with relative weights from 0.7374 to 1.4909 depending on complications. Higher weights mean higher Medicare reimbursement.

Is Q72.31 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for congenital absence of right foot and toe(s) on inpatient claims. The code appears in the Congenital malformations and deformations of the musculoskeletal system (Q65-Q79) range of the CMS exempt list.

What is the ICD-9 equivalent of Q72.31?

Under the General Equivalence Mappings, congenital absence of right foot and toe(s) converts to ICD-9-CM 755.38 (longitudinal defic foot) and 755.39 (longitud defic phalanges). The mapping is approximate, so confirm the match fits the documentation.