Skip to main content
ICD-10/Z91.014

Z91.014 ICD-10-CM Code: Allergy to mammalian meats

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.

  • MS-DRG 951 — OTHER FACTORS INFLUENCING HEALTH STATUS (MDC 23)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Official Registry Overview & Definition

Allergy to mammalian meats is a billable ICD-10-CM diagnosis code (Z91.014).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for Z91.014 in the official ICD-10-CM tabular list.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Allergy to beef
  • Allergy to lamb
  • Allergy to pork
  • Allergy to red meats
  • Alpha-gal syndrome (AGS)

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Code Also

Additional codes that may be required to fully describe the encounter.

  • any follow-up examination (Z08-Z09)

Change history

  • FY2027 — 2026-10-01
    Inclusion term note added
    Alpha-gal syndrome (AGS)
    FY2027 changes
  • FY2022 — 2021-10-01
    Added to the code set
    Allergy to mammalian meats
    FY2022 changes

Verify Before Coding

  • Billable — reportable as written.
  • Principal-diagnosis restriction. The Medicare Code Editor lists this code as unacceptable as a principal diagnosis: it describes a circumstance influencing health status rather than a current illness or injury being treated. It is valid as a secondary diagnosis.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Contextual Map

Every relationship of Z91.014 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

  • Z91.01 — Food allergy status [Hierarchy]

Referenced by Excludes2 notes

  • Z88 — Allergy status to drugs, medicaments and biological substances [Excludes2](via Z91.0.-): “Allergy status, other than to drugs and biological substances (Z91.0-)”

Referenced by Use Additional Code instructions

  • D89.44 — Hereditary alpha tryptasemia [Use Additional Code](via Z91.0.-): “allergy status, other than to drugs and biological substances (Z91.0-)”
  • K52.2 — Allergic and dietetic gastroenteritis and colitis [Use Additional Code](via Z91.01.-): “code to identify type of food allergy (Z91.01-, Z91.02-)”

Referenced by Code Also instructions

  • Z87.892 — Personal history of anaphylaxis [Code Also](via Z91.0.-): “allergy status, other than to drugs and biological substances (Z91.0-)”

Clinical classification (CCSR)

  • FAC025 — Other specified status [CCSR]

Potential MS-DRG

  • DRG 951 — OTHER FACTORS INFLUENCING HEALTH STATUS [MS-DRG]: “OTHER FACTORS INFLUENCING HEALTH STATUS (MDC 23)”

Index entries (11)

  • Allergy, allergic (reaction… — Allergy, allergic (reaction) (to), food NEC (any) (ingested), status (without reaction), beef [Index term]
  • Allergy, allergic (reaction… — Allergy, allergic (reaction) (to), food NEC (any) (ingested), status (without reaction), lamb [Index term]
  • Allergy, allergic (reaction… — Allergy, allergic (reaction) (to), food NEC (any) (ingested), status (without reaction), mammalian meats [Index term]
  • Allergy, allergic (reaction… — Allergy, allergic (reaction) (to), food NEC (any) (ingested), status (without reaction), pork [Index term]
  • Allergy, allergic (reaction… — Allergy, allergic (reaction) (to), food NEC (any) (ingested), status (without reaction), red meats [Index term]
  • History, personal (of), all… — History, personal (of), allergy (to), food, beef [Index term]
  • History, personal (of), all… — History, personal (of), allergy (to), food, lamb [Index term]
  • History, personal (of), all… — History, personal (of), allergy (to), food, mammalian meats [Index term]
  • and 3 more

Nearest codes (40)

  • Z91 — Personal risk factors, not elsewhere classified [Sibling]
  • Z91.0 — Allergy status, other than to drugs and biological substances [Sibling]
  • Z91.01 — Food allergy status [Sibling]
  • Z91.010 — Allergy to peanuts [Sibling]
  • Z91.011 — Allergy to milk products [Sibling]
  • Z91.0110 — Allergy to milk products, unspecified [Sibling]
  • Z91.0111 — Allergy to milk products with tolerance to baked milk [Sibling]
  • Z91.0112 — Allergy to milk products with reactivity to baked milk [Sibling]
  • and 32 more

Change history (2)

  • FY2027 — Inclusion term note added [Change history]
  • and 1 more

Referenced by Other Codes

Clinical classification (AHRQ CCSR):FAC025 — Other specified status (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 1 MS-DRG: DRG 951 (MDC 23).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Official ICD-10-CM tabular notes on other codes that name Z91.014 or its code family.

1 Excludes2 notes: Z88 (via Z91.0.-).

2 Use Additional Code instructions across 2 chapters: D89.44 (via Z91.0.-), K52.2 (via Z91.01.-).

1 Code Also instructions: Z87.892 (via Z91.0.-).

Nearest Codes in This Family

Official ICD-10-CM classifications closest to Z91.014 in its code family, with their registry titles.

  • Z91.012 — Allergy to eggs
  • Z91.0120 — Allergy to eggs, unspecified
  • Z91.0121 — Allergy to eggs with tolerance to baked egg
  • Z91.0122 — Allergy to eggs with reactivity to baked egg
  • Z91.013 — Allergy to seafood
  • Z91.018 — Allergy to other foods
  • Z91.02 — Food additives allergy status
  • Z91.03 — Insect allergy status
  • Z91.030 — Bee allergy status
  • Z91.038 — Other insect allergy status

View all codes in the Z91 family

Indexed Clinical Terms (11)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Allergy, allergic (reaction) (to), food NEC (any) (ingested), status (without reaction), beef
  • Allergy, allergic (reaction) (to), food NEC (any) (ingested), status (without reaction), lamb
  • Allergy, allergic (reaction) (to), food NEC (any) (ingested), status (without reaction), mammalian meats
  • Allergy, allergic (reaction) (to), food NEC (any) (ingested), status (without reaction), pork
  • Allergy, allergic (reaction) (to), food NEC (any) (ingested), status (without reaction), red meats
  • History, personal (of), allergy (to), food, beef
  • History, personal (of), allergy (to), food, lamb
  • History, personal (of), allergy (to), food, mammalian meats
  • History, personal (of), allergy (to), food, pork
  • History, personal (of), allergy (to), food, red meats
  • Syndrome, Alpha-gal