2027 ICD-10-CM Diagnosis Code Q82.2Congenital cutaneous mastocytosis
ICD-10-CM Codes›Q00-Q99›Q80-Q89›Q82
- Billable — Valid for Submission
- POA Exempt
- Chronic Condition
Q82.2 is a billable ICD-10-CM diagnosis code for congenital cutaneous mastocytosis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 606 through 607, 795. The code is exempt from POA reporting. Coders also document this condition as bullous diffuse cutaneous mastocytosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified congenital anomalies.
Code Identity
Code Classification
Present on Admission (POA)Billing
Q82.2 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Other congenital malformations (Q80-Q89).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Bullous diffuse cutaneous mastocytosis
- Congenital cutaneous mastocytosis
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Q82.2: its own notes plus those printed at Q82 and Chapter 17. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Congenital diffuse cutaneous mastocytosis
- Congenital maculopapular cutaneous mastocytosis
- Congenital urticaria pigmentosa
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
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.
Notes
General instructions on how these codes are used.
- 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 Q82.2, its category, or a range that includes it.
Excludes1 6
These codes carry an Excludes1 note naming Q82.2: they are not reported together with it, unless the two conditions are unrelated.
- C96.2 Malignant mast cell neoplasmmastocytosis (congenital) (cutaneous) (Q82.2)
- D47.0 Mast cell neoplasms of uncertain behaviorcongenital cutaneous mastocytosis (Q82.2)
- D47.01 Cutaneous mastocytosiscongenital (diffuse) (maculopapular) cutaneous mastocytosis (Q82.2)
- D47.01 Cutaneous mastocytosiscongenital urticaria pigmentosa (Q82.2)
- D89.4 Mast cell activation syndrome and related disorderscongenital cutaneous mastocytosis (Q82.2)
- P83 Other conditions of integument specific to newborn
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
cutaneous (diffuse) (maculopapular) D47.01
congenital Q82.2
of neonatal onset Q82.2
of newborn onset Q82.2
congenital Q82.2
of neonatal onset Q82.2
of newborn onset Q82.2
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Convert Q82.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Q82.2Overview
What is the ICD-10 code for congenital cutaneous mastocytosis?
The ICD-10-CM code for congenital cutaneous mastocytosis is Q82.2 (sometimes written as Q822). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Q82.2 (Other congenital malformations of skin) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report congenital cutaneous mastocytosis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Q82.2 group to?
When congenital cutaneous mastocytosis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 795, 607, 606, with relative weights from 0.2022 to 1.5721 depending on complications. Higher weights mean higher Medicare reimbursement.
Is Q82.2 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 cutaneous mastocytosis on inpatient claims. The code appears in the Other congenital malformations (Q80-Q89) range of the CMS exempt list.
Can Q82.2 be reported with D47.01?
Not as a rule. The Excludes1 note on Q82.2 lists "cutaneous mastocytosis NOS (D47.01)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
